Home / 109,475.40-164,217.96-42,909.60

Finding the Fourth Proportional to 109,475.40, 164,217.96 and 42,909.60

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Solution

The fourth proportional to 109,475.40, 164,217.96 and 42,909.60 is: 64,366.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,475.40 : 164,217.96 = 42,909.60 : x
  2. Step 2: Convert to fraction form
    109,475.40/164,217.96 = 42,909.60/x
  3. Step 3: Cross multiply
    109,475.40x = 164,217.96 × 42,909.60
  4. Step 4: Simplify right side
    109,475.40x = 7,046,526,976.42
  5. Step 5: Solve for x
    x = 7,046,526,976.42/109,475.40
  6. Step 6: Final answer
    x = 64,366.30

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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.