Home / 153,489.38-229,808.91-78,447.95

Finding the Fourth Proportional to 153,489.38, 229,808.91 and 78,447.95

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Solution

The fourth proportional to 153,489.38, 229,808.91 and 78,447.95 is: 117,454.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,489.38 : 229,808.91 = 78,447.95 : x
  2. Step 2: Convert to fraction form
    153,489.38/229,808.91 = 78,447.95/x
  3. Step 3: Cross multiply
    153,489.38x = 229,808.91 × 78,447.95
  4. Step 4: Simplify right side
    153,489.38x = 18,028,037,881.23
  5. Step 5: Solve for x
    x = 18,028,037,881.23/153,489.38
  6. Step 6: Final answer
    x = 117,454.63

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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.