Home / 452,121.40-678,182.10-136,545.40

Finding the Fourth Proportional to 452,121.40, 678,182.10 and 136,545.40

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Solution

The fourth proportional to 452,121.40, 678,182.10 and 136,545.40 is: 204,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,121.40 : 678,182.10 = 136,545.40 : x
  2. Step 2: Convert to fraction form
    452,121.40/678,182.10 = 136,545.40/x
  3. Step 3: Cross multiply
    452,121.40x = 678,182.10 × 136,545.40
  4. Step 4: Simplify right side
    452,121.40x = 92,602,646,117.34
  5. Step 5: Solve for x
    x = 92,602,646,117.34/452,121.40
  6. Step 6: Final answer
    x = 204,818.10

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Similar ratio
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1.5x scale

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.