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Finding the Fourth Proportional to 134,164.80, 185,203.92 and 90,565.92

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Solution

The fourth proportional to 134,164.80, 185,203.92 and 90,565.92 is: 125,019.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,164.80 : 185,203.92 = 90,565.92 : x
  2. Step 2: Convert to fraction form
    134,164.80/185,203.92 = 90,565.92/x
  3. Step 3: Cross multiply
    134,164.80x = 185,203.92 × 90,565.92
  4. Step 4: Simplify right side
    134,164.80x = 16,773,163,402.41
  5. Step 5: Solve for x
    x = 16,773,163,402.41/134,164.80
  6. Step 6: Final answer
    x = 125,019.11

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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.