Home / 131,712.56-181,759.80-75,122.72

Finding the Fourth Proportional to 131,712.56, 181,759.80 and 75,122.72

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Solution

The fourth proportional to 131,712.56, 181,759.80 and 75,122.72 is: 103,667.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,712.56 : 181,759.80 = 75,122.72 : x
  2. Step 2: Convert to fraction form
    131,712.56/181,759.80 = 75,122.72/x
  3. Step 3: Cross multiply
    131,712.56x = 181,759.80 × 75,122.72
  4. Step 4: Simplify right side
    131,712.56x = 13,654,290,562.66
  5. Step 5: Solve for x
    x = 13,654,290,562.66/131,712.56
  6. Step 6: Final answer
    x = 103,667.34

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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.