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Finding the Fourth Proportional to 99,423.40, 137,204.24 and 54,711.40

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Solution

The fourth proportional to 99,423.40, 137,204.24 and 54,711.40 is: 75,501.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,423.40 : 137,204.24 = 54,711.40 : x
  2. Step 2: Convert to fraction form
    99,423.40/137,204.24 = 54,711.40/x
  3. Step 3: Cross multiply
    99,423.40x = 137,204.24 × 54,711.40
  4. Step 4: Simplify right side
    99,423.40x = 7,506,636,056.34
  5. Step 5: Solve for x
    x = 7,506,636,056.34/99,423.40
  6. Step 6: Final answer
    x = 75,501.70

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Half scale
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Double scale
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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.