Home / 115,329.60-159,156-67,611.20

Finding the Fourth Proportional to 115,329.60, 159,156 and 67,611.20

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Solution

The fourth proportional to 115,329.60, 159,156 and 67,611.20 is: 93,304.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,329.60 : 159,156 = 67,611.20 : x
  2. Step 2: Convert to fraction form
    115,329.60/159,156 = 67,611.20/x
  3. Step 3: Cross multiply
    115,329.60x = 159,156 × 67,611.20
  4. Step 4: Simplify right side
    115,329.60x = 10,760,728,147.20
  5. Step 5: Solve for x
    x = 10,760,728,147.20/115,329.60
  6. Step 6: Final answer
    x = 93,304.13

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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.