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Finding the Fourth Proportional to 162,872.40, 224,872.20 and 125,079.12

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Solution

The fourth proportional to 162,872.40, 224,872.20 and 125,079.12 is: 172,692.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,872.40 : 224,872.20 = 125,079.12 : x
  2. Step 2: Convert to fraction form
    162,872.40/224,872.20 = 125,079.12/x
  3. Step 3: Cross multiply
    162,872.40x = 224,872.20 × 125,079.12
  4. Step 4: Simplify right side
    162,872.40x = 28,126,816,888.46
  5. Step 5: Solve for x
    x = 28,126,816,888.46/162,872.40
  6. Step 6: Final answer
    x = 172,692.35

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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.