Home / 154,430.88-231,254.28-129,405.12

Finding the Fourth Proportional to 154,430.88, 231,254.28 and 129,405.12

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Solution

The fourth proportional to 154,430.88, 231,254.28 and 129,405.12 is: 193,779.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,430.88 : 231,254.28 = 129,405.12 : x
  2. Step 2: Convert to fraction form
    154,430.88/231,254.28 = 129,405.12/x
  3. Step 3: Cross multiply
    154,430.88x = 231,254.28 × 129,405.12
  4. Step 4: Simplify right side
    154,430.88x = 29,925,487,853.91
  5. Step 5: Solve for x
    x = 29,925,487,853.91/154,430.88
  6. Step 6: Final answer
    x = 193,779.17

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1.5x scale

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.