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Finding the Fourth Proportional to 131,494.62, 181,428.48 and 80,488.92

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Solution

The fourth proportional to 131,494.62, 181,428.48 and 80,488.92 is: 111,053.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,494.62 : 181,428.48 = 80,488.92 : x
  2. Step 2: Convert to fraction form
    131,494.62/181,428.48 = 80,488.92/x
  3. Step 3: Cross multiply
    131,494.62x = 181,428.48 × 80,488.92
  4. Step 4: Simplify right side
    131,494.62x = 14,602,982,412.44
  5. Step 5: Solve for x
    x = 14,602,982,412.44/131,494.62
  6. Step 6: Final answer
    x = 111,053.84

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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.