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Finding the Fourth Proportional to 91,773,129.60, 137,659,694.40 and 83,412,374.40

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Solution

The fourth proportional to 91,773,129.60, 137,659,694.40 and 83,412,374.40 is: 125,118,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,773,129.60 : 137,659,694.40 = 83,412,374.40 : x
  2. Step 2: Convert to fraction form
    91,773,129.60/137,659,694.40 = 83,412,374.40/x
  3. Step 3: Cross multiply
    91,773,129.60x = 137,659,694.40 × 83,412,374.40
  4. Step 4: Simplify right side
    91,773,129.60x = 11,482,521,969,082,384
  5. Step 5: Solve for x
    x = 11,482,521,969,082,384/91,773,129.60
  6. Step 6: Final answer
    x = 125,118,561.60

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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.