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Finding the Fourth Proportional to 159,940.71, 220,718.25 and 88,325.60

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Solution

The fourth proportional to 159,940.71, 220,718.25 and 88,325.60 is: 121,889.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,940.71 : 220,718.25 = 88,325.60 : x
  2. Step 2: Convert to fraction form
    159,940.71/220,718.25 = 88,325.60/x
  3. Step 3: Cross multiply
    159,940.71x = 220,718.25 × 88,325.60
  4. Step 4: Simplify right side
    159,940.71x = 19,495,070,758.61
  5. Step 5: Solve for x
    x = 19,495,070,758.61/159,940.71
  6. Step 6: Final answer
    x = 121,889.36

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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.