Home / 103,823.79-143,278.17-61,381.95

Finding the Fourth Proportional to 103,823.79, 143,278.17 and 61,381.95

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Solution

The fourth proportional to 103,823.79, 143,278.17 and 61,381.95 is: 84,707.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,823.79 : 143,278.17 = 61,381.95 : x
  2. Step 2: Convert to fraction form
    103,823.79/143,278.17 = 61,381.95/x
  3. Step 3: Cross multiply
    103,823.79x = 143,278.17 × 61,381.95
  4. Step 4: Simplify right side
    103,823.79x = 8,794,692,443.73
  5. Step 5: Solve for x
    x = 8,794,692,443.73/103,823.79
  6. Step 6: Final answer
    x = 84,707.88

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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.