Home / 103,073.42-142,178.45-68,147.95

Finding the Fourth Proportional to 103,073.42, 142,178.45 and 68,147.95

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Solution

The fourth proportional to 103,073.42, 142,178.45 and 68,147.95 is: 94,002.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,073.42 : 142,178.45 = 68,147.95 : x
  2. Step 2: Convert to fraction form
    103,073.42/142,178.45 = 68,147.95/x
  3. Step 3: Cross multiply
    103,073.42x = 142,178.45 × 68,147.95
  4. Step 4: Simplify right side
    103,073.42x = 9,689,169,901.68
  5. Step 5: Solve for x
    x = 9,689,169,901.68/103,073.42
  6. Step 6: Final answer
    x = 94,002.60

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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.