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Finding the Fourth Proportional to 135,992.11, 203,988.12 and 42,497.86

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Solution

The fourth proportional to 135,992.11, 203,988.12 and 42,497.86 is: 63,746.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,992.11 : 203,988.12 = 42,497.86 : x
  2. Step 2: Convert to fraction form
    135,992.11/203,988.12 = 42,497.86/x
  3. Step 3: Cross multiply
    135,992.11x = 203,988.12 × 42,497.86
  4. Step 4: Simplify right side
    135,992.11x = 8,669,057,545.48
  5. Step 5: Solve for x
    x = 8,669,057,545.48/135,992.11
  6. Step 6: Final answer
    x = 63,746.77

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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.