Home / 125,177.81-172,650.39-90,672.11

Finding the Fourth Proportional to 125,177.81, 172,650.39 and 90,672.11

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Solution

The fourth proportional to 125,177.81, 172,650.39 and 90,672.11 is: 125,058.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,177.81 : 172,650.39 = 90,672.11 : x
  2. Step 2: Convert to fraction form
    125,177.81/172,650.39 = 90,672.11/x
  3. Step 3: Cross multiply
    125,177.81x = 172,650.39 × 90,672.11
  4. Step 4: Simplify right side
    125,177.81x = 15,654,574,597.79
  5. Step 5: Solve for x
    x = 15,654,574,597.79/125,177.81
  6. Step 6: Final answer
    x = 125,058.71

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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.