Home / 147,042.40-220,126.20-97,178.80

Finding the Fourth Proportional to 147,042.40, 220,126.20 and 97,178.80

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Solution

The fourth proportional to 147,042.40, 220,126.20 and 97,178.80 is: 145,479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,042.40 : 220,126.20 = 97,178.80 : x
  2. Step 2: Convert to fraction form
    147,042.40/220,126.20 = 97,178.80/x
  3. Step 3: Cross multiply
    147,042.40x = 220,126.20 × 97,178.80
  4. Step 4: Simplify right side
    147,042.40x = 21,391,599,964.56
  5. Step 5: Solve for x
    x = 21,391,599,964.56/147,042.40
  6. Step 6: Final answer
    x = 145,479.13

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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.