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Finding the Fourth Proportional to 149,615.52, 206,454.40 and 88,352.16

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Solution

The fourth proportional to 149,615.52, 206,454.40 and 88,352.16 is: 121,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,615.52 : 206,454.40 = 88,352.16 : x
  2. Step 2: Convert to fraction form
    149,615.52/206,454.40 = 88,352.16/x
  3. Step 3: Cross multiply
    149,615.52x = 206,454.40 × 88,352.16
  4. Step 4: Simplify right side
    149,615.52x = 18,240,692,181.50
  5. Step 5: Solve for x
    x = 18,240,692,181.50/149,615.52
  6. Step 6: Final answer
    x = 121,917.11

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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.