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Finding the Fourth Proportional to 133,332.48, 183,991.28 and 72,891.90

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Solution

The fourth proportional to 133,332.48, 183,991.28 and 72,891.90 is: 100,586.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,332.48 : 183,991.28 = 72,891.90 : x
  2. Step 2: Convert to fraction form
    133,332.48/183,991.28 = 72,891.90/x
  3. Step 3: Cross multiply
    133,332.48x = 183,991.28 × 72,891.90
  4. Step 4: Simplify right side
    133,332.48x = 13,411,473,982.63
  5. Step 5: Solve for x
    x = 13,411,473,982.63/133,332.48
  6. Step 6: Final answer
    x = 100,586.70

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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.