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Finding the Fourth Proportional to 109,917, 151,685.46 and 62,169.32

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Solution

The fourth proportional to 109,917, 151,685.46 and 62,169.32 is: 85,793.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,917 : 151,685.46 = 62,169.32 : x
  2. Step 2: Convert to fraction form
    109,917/151,685.46 = 62,169.32/x
  3. Step 3: Cross multiply
    109,917x = 151,685.46 × 62,169.32
  4. Step 4: Simplify right side
    109,917x = 9,430,182,281.30
  5. Step 5: Solve for x
    x = 9,430,182,281.30/109,917
  6. Step 6: Final answer
    x = 85,793.67

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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.