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Finding the Fourth Proportional to 112,654.65, 155,463.18 and 61,667.39

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Solution

The fourth proportional to 112,654.65, 155,463.18 and 61,667.39 is: 85,100.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,654.65 : 155,463.18 = 61,667.39 : x
  2. Step 2: Convert to fraction form
    112,654.65/155,463.18 = 61,667.39/x
  3. Step 3: Cross multiply
    112,654.65x = 155,463.18 × 61,667.39
  4. Step 4: Simplify right side
    112,654.65x = 9,587,008,551.70
  5. Step 5: Solve for x
    x = 9,587,008,551.70/112,654.65
  6. Step 6: Final answer
    x = 85,100.87

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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.