Home / 129,156.55-194,026.47-76,600.51

Finding the Fourth Proportional to 129,156.55, 194,026.47 and 76,600.51

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Solution

The fourth proportional to 129,156.55, 194,026.47 and 76,600.51 is: 115,073.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,156.55 : 194,026.47 = 76,600.51 : x
  2. Step 2: Convert to fraction form
    129,156.55/194,026.47 = 76,600.51/x
  3. Step 3: Cross multiply
    129,156.55x = 194,026.47 × 76,600.51
  4. Step 4: Simplify right side
    129,156.55x = 14,862,526,555.50
  5. Step 5: Solve for x
    x = 14,862,526,555.50/129,156.55
  6. Step 6: Final answer
    x = 115,073.73

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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.