Home / 123,378.93-170,264.11-72,392.53

Finding the Fourth Proportional to 123,378.93, 170,264.11 and 72,392.53

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Solution

The fourth proportional to 123,378.93, 170,264.11 and 72,392.53 is: 99,902.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,378.93 : 170,264.11 = 72,392.53 : x
  2. Step 2: Convert to fraction form
    123,378.93/170,264.11 = 72,392.53/x
  3. Step 3: Cross multiply
    123,378.93x = 170,264.11 × 72,392.53
  4. Step 4: Simplify right side
    123,378.93x = 12,325,849,691.10
  5. Step 5: Solve for x
    x = 12,325,849,691.10/123,378.93
  6. Step 6: Final answer
    x = 99,902.39

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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.