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Finding the Fourth Proportional to 133,695.60, 200,543.40 and 91,705.20

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Solution

The fourth proportional to 133,695.60, 200,543.40 and 91,705.20 is: 137,557.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,695.60 : 200,543.40 = 91,705.20 : x
  2. Step 2: Convert to fraction form
    133,695.60/200,543.40 = 91,705.20/x
  3. Step 3: Cross multiply
    133,695.60x = 200,543.40 × 91,705.20
  4. Step 4: Simplify right side
    133,695.60x = 18,390,872,605.68
  5. Step 5: Solve for x
    x = 18,390,872,605.68/133,695.60
  6. Step 6: Final answer
    x = 137,557.80

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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.