Home / 87,125,956.20-130,688,934.30-85,992,215.40

Finding the Fourth Proportional to 87,125,956.20, 130,688,934.30 and 85,992,215.40

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Solution

The fourth proportional to 87,125,956.20, 130,688,934.30 and 85,992,215.40 is: 128,988,323.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,125,956.20 : 130,688,934.30 = 85,992,215.40 : x
  2. Step 2: Convert to fraction form
    87,125,956.20/130,688,934.30 = 85,992,215.40/x
  3. Step 3: Cross multiply
    87,125,956.20x = 130,688,934.30 × 85,992,215.40
  4. Step 4: Simplify right side
    87,125,956.20x = 11,238,230,988,722,048
  5. Step 5: Solve for x
    x = 11,238,230,988,722,048/87,125,956.20
  6. Step 6: Final answer
    x = 128,988,323.10

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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.