Home / 103,046.38-154,341.18-79,178.20

Finding the Fourth Proportional to 103,046.38, 154,341.18 and 79,178.20

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Solution

The fourth proportional to 103,046.38, 154,341.18 and 79,178.20 is: 118,591.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,046.38 : 154,341.18 = 79,178.20 : x
  2. Step 2: Convert to fraction form
    103,046.38/154,341.18 = 79,178.20/x
  3. Step 3: Cross multiply
    103,046.38x = 154,341.18 × 79,178.20
  4. Step 4: Simplify right side
    103,046.38x = 12,220,456,818.28
  5. Step 5: Solve for x
    x = 12,220,456,818.28/103,046.38
  6. Step 6: Final answer
    x = 118,591.81

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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.