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Finding the Fourth Proportional to 115,766.64, 159,753.60 and 65,466.72

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Solution

The fourth proportional to 115,766.64, 159,753.60 and 65,466.72 is: 90,341.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,766.64 : 159,753.60 = 65,466.72 : x
  2. Step 2: Convert to fraction form
    115,766.64/159,753.60 = 65,466.72/x
  3. Step 3: Cross multiply
    115,766.64x = 159,753.60 × 65,466.72
  4. Step 4: Simplify right side
    115,766.64x = 10,458,544,200.19
  5. Step 5: Solve for x
    x = 10,458,544,200.19/115,766.64
  6. Step 6: Final answer
    x = 90,341.61

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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.