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Finding the Fourth Proportional to 145,155.96, 217,677.96 and 56,397.78

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Solution

The fourth proportional to 145,155.96, 217,677.96 and 56,397.78 is: 84,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155.96 : 217,677.96 = 56,397.78 : x
  2. Step 2: Convert to fraction form
    145,155.96/217,677.96 = 56,397.78/x
  3. Step 3: Cross multiply
    145,155.96x = 217,677.96 × 56,397.78
  4. Step 4: Simplify right side
    145,155.96x = 12,276,553,698.93
  5. Step 5: Solve for x
    x = 12,276,553,698.93/145,155.96
  6. Step 6: Final answer
    x = 84,574.92

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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.