Home / 130,520,718,765.65-180,118,600,558.14-72,647,856,601.91

Finding the Fourth Proportional to 130,520,718,765.65, 180,118,600,558.14 and 72,647,856,601.91

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Solution

The fourth proportional to 130,520,718,765.65, 180,118,600,558.14 and 72,647,856,601.91 is: 100,254,046,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,520,718,765.65 : 180,118,600,558.14 = 72,647,856,601.91 : x
  2. Step 2: Convert to fraction form
    130,520,718,765.65/180,118,600,558.14 = 72,647,856,601.91/x
  3. Step 3: Cross multiply
    130,520,718,765.65x = 180,118,600,558.14 × 72,647,856,601.91
  4. Step 4: Simplify right side
    130,520,718,765.65x = 13,085,230,264,683,562,270,720
  5. Step 5: Solve for x
    x = 13,085,230,264,683,562,270,720/130,520,718,765.65
  6. Step 6: Final answer
    x = 100,254,046,931.65

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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.