Home / 109,515.40-151,066.02-69,157.96

Finding the Fourth Proportional to 109,515.40, 151,066.02 and 69,157.96

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Solution

The fourth proportional to 109,515.40, 151,066.02 and 69,157.96 is: 95,396.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,515.40 : 151,066.02 = 69,157.96 : x
  2. Step 2: Convert to fraction form
    109,515.40/151,066.02 = 69,157.96/x
  3. Step 3: Cross multiply
    109,515.40x = 151,066.02 × 69,157.96
  4. Step 4: Simplify right side
    109,515.40x = 10,447,417,768.52
  5. Step 5: Solve for x
    x = 10,447,417,768.52/109,515.40
  6. Step 6: Final answer
    x = 95,396.79

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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.