Home / 127,421.38-191,279.72-68,372.38

Finding the Fourth Proportional to 127,421.38, 191,279.72 and 68,372.38

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Solution

The fourth proportional to 127,421.38, 191,279.72 and 68,372.38 is: 102,637.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,421.38 : 191,279.72 = 68,372.38 : x
  2. Step 2: Convert to fraction form
    127,421.38/191,279.72 = 68,372.38/x
  3. Step 3: Cross multiply
    127,421.38x = 191,279.72 × 68,372.38
  4. Step 4: Simplify right side
    127,421.38x = 13,078,249,702.13
  5. Step 5: Solve for x
    x = 13,078,249,702.13/127,421.38
  6. Step 6: Final answer
    x = 102,637.80

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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.