Home / 129,254.40-193,420.80-89,625.60

Finding the Fourth Proportional to 129,254.40, 193,420.80 and 89,625.60

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Solution

The fourth proportional to 129,254.40, 193,420.80 and 89,625.60 is: 134,118.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,254.40 : 193,420.80 = 89,625.60 : x
  2. Step 2: Convert to fraction form
    129,254.40/193,420.80 = 89,625.60/x
  3. Step 3: Cross multiply
    129,254.40x = 193,420.80 × 89,625.60
  4. Step 4: Simplify right side
    129,254.40x = 17,335,455,252.48
  5. Step 5: Solve for x
    x = 17,335,455,252.48/129,254.40
  6. Step 6: Final answer
    x = 134,118.88

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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.