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Finding the Fourth Proportional to 131,354.82, 197,030.12 and 89,129.88

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Solution

The fourth proportional to 131,354.82, 197,030.12 and 89,129.88 is: 133,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,354.82 : 197,030.12 = 89,129.88 : x
  2. Step 2: Convert to fraction form
    131,354.82/197,030.12 = 89,129.88/x
  3. Step 3: Cross multiply
    131,354.82x = 197,030.12 × 89,129.88
  4. Step 4: Simplify right side
    131,354.82x = 17,561,270,506.34
  5. Step 5: Solve for x
    x = 17,561,270,506.34/131,354.82
  6. Step 6: Final answer
    x = 133,693.38

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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.