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Finding the Fourth Proportional to 119,326.40, 179,378.40 and 84,507.20

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Solution

The fourth proportional to 119,326.40, 179,378.40 and 84,507.20 is: 127,036.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,326.40 : 179,378.40 = 84,507.20 : x
  2. Step 2: Convert to fraction form
    119,326.40/179,378.40 = 84,507.20/x
  3. Step 3: Cross multiply
    119,326.40x = 179,378.40 × 84,507.20
  4. Step 4: Simplify right side
    119,326.40x = 15,158,766,324.48
  5. Step 5: Solve for x
    x = 15,158,766,324.48/119,326.40
  6. Step 6: Final answer
    x = 127,036.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.