Home / 90,718.28-136,100.42-64,116.60

Finding the Fourth Proportional to 90,718.28, 136,100.42 and 64,116.60

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Solution

The fourth proportional to 90,718.28, 136,100.42 and 64,116.60 is: 96,191.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,718.28 : 136,100.42 = 64,116.60 : x
  2. Step 2: Convert to fraction form
    90,718.28/136,100.42 = 64,116.60/x
  3. Step 3: Cross multiply
    90,718.28x = 136,100.42 × 64,116.60
  4. Step 4: Simplify right side
    90,718.28x = 8,726,295,868.39
  5. Step 5: Solve for x
    x = 8,726,295,868.39/90,718.28
  6. Step 6: Final answer
    x = 96,191.16

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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.