Home / 136,761.47-188,728.35-76,331.02

Finding the Fourth Proportional to 136,761.47, 188,728.35 and 76,331.02

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Solution

The fourth proportional to 136,761.47, 188,728.35 and 76,331.02 is: 105,335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,761.47 : 188,728.35 = 76,331.02 : x
  2. Step 2: Convert to fraction form
    136,761.47/188,728.35 = 76,331.02/x
  3. Step 3: Cross multiply
    136,761.47x = 188,728.35 × 76,331.02
  4. Step 4: Simplify right side
    136,761.47x = 14,405,827,458.42
  5. Step 5: Solve for x
    x = 14,405,827,458.42/136,761.47
  6. Step 6: Final answer
    x = 105,335.42

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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.