Home / 130,520,718,765.66-180,118,600,558.17-72,647,856,601.92

Finding the Fourth Proportional to 130,520,718,765.66, 180,118,600,558.17 and 72,647,856,601.92

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Solution

The fourth proportional to 130,520,718,765.66, 180,118,600,558.17 and 72,647,856,601.92 is: 100,254,046,931.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,520,718,765.66 : 180,118,600,558.17 = 72,647,856,601.92 : x
  2. Step 2: Convert to fraction form
    130,520,718,765.66/180,118,600,558.17 = 72,647,856,601.92/x
  3. Step 3: Cross multiply
    130,520,718,765.66x = 180,118,600,558.17 × 72,647,856,601.92
  4. Step 4: Simplify right side
    130,520,718,765.66x = 13,085,230,264,688,442,343,424
  5. Step 5: Solve for x
    x = 13,085,230,264,688,442,343,424/130,520,718,765.66
  6. Step 6: Final answer
    x = 100,254,046,931.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.