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Finding the Fourth Proportional to 126,641.76, 174,668.28 and 88,389.06

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Solution

The fourth proportional to 126,641.76, 174,668.28 and 88,389.06 is: 121,908.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,641.76 : 174,668.28 = 88,389.06 : x
  2. Step 2: Convert to fraction form
    126,641.76/174,668.28 = 88,389.06/x
  3. Step 3: Cross multiply
    126,641.76x = 174,668.28 × 88,389.06
  4. Step 4: Simplify right side
    126,641.76x = 15,438,765,081.02
  5. Step 5: Solve for x
    x = 15,438,765,081.02/126,641.76
  6. Step 6: Final answer
    x = 121,908.96

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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.