Home / 87,125,969.20-130,688,953.80-85,992,228.40

Finding the Fourth Proportional to 87,125,969.20, 130,688,953.80 and 85,992,228.40

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Solution

The fourth proportional to 87,125,969.20, 130,688,953.80 and 85,992,228.40 is: 128,988,342.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,125,969.20 : 130,688,953.80 = 85,992,228.40 : x
  2. Step 2: Convert to fraction form
    87,125,969.20/130,688,953.80 = 85,992,228.40/x
  3. Step 3: Cross multiply
    87,125,969.20x = 130,688,953.80 × 85,992,228.40
  4. Step 4: Simplify right side
    87,125,969.20x = 11,238,234,364,526,648
  5. Step 5: Solve for x
    x = 11,238,234,364,526,648/87,125,969.20
  6. Step 6: Final answer
    x = 128,988,342.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.