Home / 109,778.32-151,438.35-69,424.12

Finding the Fourth Proportional to 109,778.32, 151,438.35 and 69,424.12

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Solution

The fourth proportional to 109,778.32, 151,438.35 and 69,424.12 is: 95,770.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,778.32 : 151,438.35 = 69,424.12 : x
  2. Step 2: Convert to fraction form
    109,778.32/151,438.35 = 69,424.12/x
  3. Step 3: Cross multiply
    109,778.32x = 151,438.35 × 69,424.12
  4. Step 4: Simplify right side
    109,778.32x = 10,513,474,183.00
  5. Step 5: Solve for x
    x = 10,513,474,183.00/109,778.32
  6. Step 6: Final answer
    x = 95,770.04

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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.