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Finding the Fourth Proportional to 127,522.80, 191,291.04 and 38,779.20

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Solution

The fourth proportional to 127,522.80, 191,291.04 and 38,779.20 is: 58,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,522.80 : 191,291.04 = 38,779.20 : x
  2. Step 2: Convert to fraction form
    127,522.80/191,291.04 = 38,779.20/x
  3. Step 3: Cross multiply
    127,522.80x = 191,291.04 × 38,779.20
  4. Step 4: Simplify right side
    127,522.80x = 7,418,113,498.37
  5. Step 5: Solve for x
    x = 7,418,113,498.37/127,522.80
  6. Step 6: Final answer
    x = 58,170.88

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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.