Home / 115,121.15-158,871.59-66,724.66

Finding the Fourth Proportional to 115,121.15, 158,871.59 and 66,724.66

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Solution

The fourth proportional to 115,121.15, 158,871.59 and 66,724.66 is: 92,082.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,121.15 : 158,871.59 = 66,724.66 : x
  2. Step 2: Convert to fraction form
    115,121.15/158,871.59 = 66,724.66/x
  3. Step 3: Cross multiply
    115,121.15x = 158,871.59 × 66,724.66
  4. Step 4: Simplify right side
    115,121.15x = 10,600,653,200.76
  5. Step 5: Solve for x
    x = 10,600,653,200.76/115,121.15
  6. Step 6: Final answer
    x = 92,082.58

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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.