Home / 198,061.28-297,031.20-71,686.40

Finding the Fourth Proportional to 198,061.28, 297,031.20 and 71,686.40

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Solution

The fourth proportional to 198,061.28, 297,031.20 and 71,686.40 is: 107,507.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,061.28 : 297,031.20 = 71,686.40 : x
  2. Step 2: Convert to fraction form
    198,061.28/297,031.20 = 71,686.40/x
  3. Step 3: Cross multiply
    198,061.28x = 297,031.20 × 71,686.40
  4. Step 4: Simplify right side
    198,061.28x = 21,293,097,415.68
  5. Step 5: Solve for x
    x = 21,293,097,415.68/198,061.28
  6. Step 6: Final answer
    x = 107,507.62

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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.