Home / 109,507.11-151,122-61,751.13

Finding the Fourth Proportional to 109,507.11, 151,122 and 61,751.13

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Solution

The fourth proportional to 109,507.11, 151,122 and 61,751.13 is: 85,217.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,507.11 : 151,122 = 61,751.13 : x
  2. Step 2: Convert to fraction form
    109,507.11/151,122 = 61,751.13/x
  3. Step 3: Cross multiply
    109,507.11x = 151,122 × 61,751.13
  4. Step 4: Simplify right side
    109,507.11x = 9,331,954,267.86
  5. Step 5: Solve for x
    x = 9,331,954,267.86/109,507.11
  6. Step 6: Final answer
    x = 85,217.79

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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.