Home / 138,452,981.85-191,123,945.46-86,267,801.16

Finding the Fourth Proportional to 138,452,981.85, 191,123,945.46 and 86,267,801.16

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Solution

The fourth proportional to 138,452,981.85, 191,123,945.46 and 86,267,801.16 is: 119,086,221.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452,981.85 : 191,123,945.46 = 86,267,801.16 : x
  2. Step 2: Convert to fraction form
    138,452,981.85/191,123,945.46 = 86,267,801.16/x
  3. Step 3: Cross multiply
    138,452,981.85x = 191,123,945.46 × 86,267,801.16
  4. Step 4: Simplify right side
    138,452,981.85x = 16,487,842,523,857,964
  5. Step 5: Solve for x
    x = 16,487,842,523,857,964/138,452,981.85
  6. Step 6: Final answer
    x = 119,086,221.93

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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.