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Finding the Fourth Proportional to 173,851.80, 260,700.90 and 80,386.20

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Solution

The fourth proportional to 173,851.80, 260,700.90 and 80,386.20 is: 120,543.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,851.80 : 260,700.90 = 80,386.20 : x
  2. Step 2: Convert to fraction form
    173,851.80/260,700.90 = 80,386.20/x
  3. Step 3: Cross multiply
    173,851.80x = 260,700.90 × 80,386.20
  4. Step 4: Simplify right side
    173,851.80x = 20,956,754,687.58
  5. Step 5: Solve for x
    x = 20,956,754,687.58/173,851.80
  6. Step 6: Final answer
    x = 120,543.79

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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.