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Finding the Fourth Proportional to 131,693.96, 181,736.28 and 71,263.28

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Solution

The fourth proportional to 131,693.96, 181,736.28 and 71,263.28 is: 98,342.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,693.96 : 181,736.28 = 71,263.28 : x
  2. Step 2: Convert to fraction form
    131,693.96/181,736.28 = 71,263.28/x
  3. Step 3: Cross multiply
    131,693.96x = 181,736.28 × 71,263.28
  4. Step 4: Simplify right side
    131,693.96x = 12,951,123,407.80
  5. Step 5: Solve for x
    x = 12,951,123,407.80/131,693.96
  6. Step 6: Final answer
    x = 98,342.58

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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.