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Finding the Fourth Proportional to 99,737.73, 137,688.93 and 77,025.74

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Solution

The fourth proportional to 99,737.73, 137,688.93 and 77,025.74 is: 106,334.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.73 : 137,688.93 = 77,025.74 : x
  2. Step 2: Convert to fraction form
    99,737.73/137,688.93 = 77,025.74/x
  3. Step 3: Cross multiply
    99,737.73x = 137,688.93 × 77,025.74
  4. Step 4: Simplify right side
    99,737.73x = 10,605,591,034.61
  5. Step 5: Solve for x
    x = 10,605,591,034.61/99,737.73
  6. Step 6: Final answer
    x = 106,334.79

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1.5x scale

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.