Home / 103,616.40-142,990.84-61,177.66

Finding the Fourth Proportional to 103,616.40, 142,990.84 and 61,177.66

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Solution

The fourth proportional to 103,616.40, 142,990.84 and 61,177.66 is: 84,425.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,616.40 : 142,990.84 = 61,177.66 : x
  2. Step 2: Convert to fraction form
    103,616.40/142,990.84 = 61,177.66/x
  3. Step 3: Cross multiply
    103,616.40x = 142,990.84 × 61,177.66
  4. Step 4: Simplify right side
    103,616.40x = 8,747,844,992.63
  5. Step 5: Solve for x
    x = 8,747,844,992.63/103,616.40
  6. Step 6: Final answer
    x = 84,425.29

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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.