Home / 109,436.49-151,013.31-61,701.57

Finding the Fourth Proportional to 109,436.49, 151,013.31 and 61,701.57

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Solution

The fourth proportional to 109,436.49, 151,013.31 and 61,701.57 is: 85,143.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,436.49 : 151,013.31 = 61,701.57 : x
  2. Step 2: Convert to fraction form
    109,436.49/151,013.31 = 61,701.57/x
  3. Step 3: Cross multiply
    109,436.49x = 151,013.31 × 61,701.57
  4. Step 4: Simplify right side
    109,436.49x = 9,317,758,317.90
  5. Step 5: Solve for x
    x = 9,317,758,317.90/109,436.49
  6. Step 6: Final answer
    x = 85,143.07

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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.