Home / 131,728.74-181,785.15-71,300.42

Finding the Fourth Proportional to 131,728.74, 181,785.15 and 71,300.42

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Solution

The fourth proportional to 131,728.74, 181,785.15 and 71,300.42 is: 98,394.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,728.74 : 181,785.15 = 71,300.42 : x
  2. Step 2: Convert to fraction form
    131,728.74/181,785.15 = 71,300.42/x
  3. Step 3: Cross multiply
    131,728.74x = 181,785.15 × 71,300.42
  4. Step 4: Simplify right side
    131,728.74x = 12,961,356,635.84
  5. Step 5: Solve for x
    x = 12,961,356,635.84/131,728.74
  6. Step 6: Final answer
    x = 98,394.30

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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.