Home / 129,056.16-193,272.72-77,616.90

Finding the Fourth Proportional to 129,056.16, 193,272.72 and 77,616.90

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Solution

The fourth proportional to 129,056.16, 193,272.72 and 77,616.90 is: 116,238.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,056.16 : 193,272.72 = 77,616.90 : x
  2. Step 2: Convert to fraction form
    129,056.16/193,272.72 = 77,616.90/x
  3. Step 3: Cross multiply
    129,056.16x = 193,272.72 × 77,616.90
  4. Step 4: Simplify right side
    129,056.16x = 15,001,229,380.97
  5. Step 5: Solve for x
    x = 15,001,229,380.97/129,056.16
  6. Step 6: Final answer
    x = 116,238.00

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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.