Home / 127,748.61-176,293.09-74,064.78

Finding the Fourth Proportional to 127,748.61, 176,293.09 and 74,064.78

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Solution

The fourth proportional to 127,748.61, 176,293.09 and 74,064.78 is: 102,209.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,748.61 : 176,293.09 = 74,064.78 : x
  2. Step 2: Convert to fraction form
    127,748.61/176,293.09 = 74,064.78/x
  3. Step 3: Cross multiply
    127,748.61x = 176,293.09 × 74,064.78
  4. Step 4: Simplify right side
    127,748.61x = 13,057,109,018.95
  5. Step 5: Solve for x
    x = 13,057,109,018.95/127,748.61
  6. Step 6: Final answer
    x = 102,209.40

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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.