Home / 156,134,787.74-215,467,290.78-86,521,331.18

Finding the Fourth Proportional to 156,134,787.74, 215,467,290.78 and 86,521,331.18

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Solution

The fourth proportional to 156,134,787.74, 215,467,290.78 and 86,521,331.18 is: 119,400,148.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,134,787.74 : 215,467,290.78 = 86,521,331.18 : x
  2. Step 2: Convert to fraction form
    156,134,787.74/215,467,290.78 = 86,521,331.18/x
  3. Step 3: Cross multiply
    156,134,787.74x = 215,467,290.78 × 86,521,331.18
  4. Step 4: Simplify right side
    156,134,787.74x = 18,642,516,824,033,744
  5. Step 5: Solve for x
    x = 18,642,516,824,033,744/156,134,787.74
  6. Step 6: Final answer
    x = 119,400,148.38

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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.