Home / 126,117.10-189,175.65-105,841.90

Finding the Fourth Proportional to 126,117.10, 189,175.65 and 105,841.90

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Solution

The fourth proportional to 126,117.10, 189,175.65 and 105,841.90 is: 158,762.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,117.10 : 189,175.65 = 105,841.90 : x
  2. Step 2: Convert to fraction form
    126,117.10/189,175.65 = 105,841.90/x
  3. Step 3: Cross multiply
    126,117.10x = 189,175.65 × 105,841.90
  4. Step 4: Simplify right side
    126,117.10x = 20,022,710,229.74
  5. Step 5: Solve for x
    x = 20,022,710,229.74/126,117.10
  6. Step 6: Final answer
    x = 158,762.85

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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.