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Finding the Fourth Proportional to 131,778.04, 181,866.72 and 75,197.92

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Solution

The fourth proportional to 131,778.04, 181,866.72 and 75,197.92 is: 103,780.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,778.04 : 181,866.72 = 75,197.92 : x
  2. Step 2: Convert to fraction form
    131,778.04/181,866.72 = 75,197.92/x
  3. Step 3: Cross multiply
    131,778.04x = 181,866.72 × 75,197.92
  4. Step 4: Simplify right side
    131,778.04x = 13,675,999,061.22
  5. Step 5: Solve for x
    x = 13,675,999,061.22/131,778.04
  6. Step 6: Final answer
    x = 103,780.56

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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.