Home / 127,320.19-175,635.96-86,486.42

Finding the Fourth Proportional to 127,320.19, 175,635.96 and 86,486.42

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Solution

The fourth proportional to 127,320.19, 175,635.96 and 86,486.42 is: 119,306.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,320.19 : 175,635.96 = 86,486.42 : x
  2. Step 2: Convert to fraction form
    127,320.19/175,635.96 = 86,486.42/x
  3. Step 3: Cross multiply
    127,320.19x = 175,635.96 × 86,486.42
  4. Step 4: Simplify right side
    127,320.19x = 15,190,125,403.66
  5. Step 5: Solve for x
    x = 15,190,125,403.66/127,320.19
  6. Step 6: Final answer
    x = 119,306.49

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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.