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Finding the Fourth Proportional to 147,874.50, 204,070.89 and 90,512.67

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Solution

The fourth proportional to 147,874.50, 204,070.89 and 90,512.67 is: 124,909.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,874.50 : 204,070.89 = 90,512.67 : x
  2. Step 2: Convert to fraction form
    147,874.50/204,070.89 = 90,512.67/x
  3. Step 3: Cross multiply
    147,874.50x = 204,070.89 × 90,512.67
  4. Step 4: Simplify right side
    147,874.50x = 18,471,001,123.18
  5. Step 5: Solve for x
    x = 18,471,001,123.18/147,874.50
  6. Step 6: Final answer
    x = 124,909.98

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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.