Home / 145,060.38-200,186.78-81,402.89

Finding the Fourth Proportional to 145,060.38, 200,186.78 and 81,402.89

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Solution

The fourth proportional to 145,060.38, 200,186.78 and 81,402.89 is: 112,337.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,060.38 : 200,186.78 = 81,402.89 : x
  2. Step 2: Convert to fraction form
    145,060.38/200,186.78 = 81,402.89/x
  3. Step 3: Cross multiply
    145,060.38x = 200,186.78 × 81,402.89
  4. Step 4: Simplify right side
    145,060.38x = 16,295,781,023.85
  5. Step 5: Solve for x
    x = 16,295,781,023.85/145,060.38
  6. Step 6: Final answer
    x = 112,337.92

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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.