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Finding the Fourth Proportional to 144,123.84, 216,190.62 and 38,943.72

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Solution

The fourth proportional to 144,123.84, 216,190.62 and 38,943.72 is: 58,416.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,123.84 : 216,190.62 = 38,943.72 : x
  2. Step 2: Convert to fraction form
    144,123.84/216,190.62 = 38,943.72/x
  3. Step 3: Cross multiply
    144,123.84x = 216,190.62 × 38,943.72
  4. Step 4: Simplify right side
    144,123.84x = 8,419,266,971.91
  5. Step 5: Solve for x
    x = 8,419,266,971.91/144,123.84
  6. Step 6: Final answer
    x = 58,416.89

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1.5x scale

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.