Home / 132,391.13-182,726.28-78,665.72

Finding the Fourth Proportional to 132,391.13, 182,726.28 and 78,665.72

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Solution

The fourth proportional to 132,391.13, 182,726.28 and 78,665.72 is: 108,574.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,391.13 : 182,726.28 = 78,665.72 : x
  2. Step 2: Convert to fraction form
    132,391.13/182,726.28 = 78,665.72/x
  3. Step 3: Cross multiply
    132,391.13x = 182,726.28 × 78,665.72
  4. Step 4: Simplify right side
    132,391.13x = 14,374,293,465.49
  5. Step 5: Solve for x
    x = 14,374,293,465.49/132,391.13
  6. Step 6: Final answer
    x = 108,574.45

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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.