Home / 136,543.28-188,411.12-76,106.76

Finding the Fourth Proportional to 136,543.28, 188,411.12 and 76,106.76

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Solution

The fourth proportional to 136,543.28, 188,411.12 and 76,106.76 is: 105,016.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,543.28 : 188,411.12 = 76,106.76 : x
  2. Step 2: Convert to fraction form
    136,543.28/188,411.12 = 76,106.76/x
  3. Step 3: Cross multiply
    136,543.28x = 188,411.12 × 76,106.76
  4. Step 4: Simplify right side
    136,543.28x = 14,339,359,891.17
  5. Step 5: Solve for x
    x = 14,339,359,891.17/136,543.28
  6. Step 6: Final answer
    x = 105,016.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.