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Finding the Fourth Proportional to 133,142.89, 183,737.85 and 72,713.52

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Solution

The fourth proportional to 133,142.89, 183,737.85 and 72,713.52 is: 100,345.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,142.89 : 183,737.85 = 72,713.52 : x
  2. Step 2: Convert to fraction form
    133,142.89/183,737.85 = 72,713.52/x
  3. Step 3: Cross multiply
    133,142.89x = 183,737.85 × 72,713.52
  4. Step 4: Simplify right side
    133,142.89x = 13,360,225,830.73
  5. Step 5: Solve for x
    x = 13,360,225,830.73/133,142.89
  6. Step 6: Final answer
    x = 100,345.02

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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.