Home / 109,139.08-150,599.70-61,391.38

Finding the Fourth Proportional to 109,139.08, 150,599.70 and 61,391.38

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Solution

The fourth proportional to 109,139.08, 150,599.70 and 61,391.38 is: 84,713.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,139.08 : 150,599.70 = 61,391.38 : x
  2. Step 2: Convert to fraction form
    109,139.08/150,599.70 = 61,391.38/x
  3. Step 3: Cross multiply
    109,139.08x = 150,599.70 × 61,391.38
  4. Step 4: Simplify right side
    109,139.08x = 9,245,523,410.59
  5. Step 5: Solve for x
    x = 9,245,523,410.59/109,139.08
  6. Step 6: Final answer
    x = 84,713.22

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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.