Home / 103,621.45-155,432.13-68,552.95

Finding the Fourth Proportional to 103,621.45, 155,432.13 and 68,552.95

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Solution

The fourth proportional to 103,621.45, 155,432.13 and 68,552.95 is: 102,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.45 : 155,432.13 = 68,552.95 : x
  2. Step 2: Convert to fraction form
    103,621.45/155,432.13 = 68,552.95/x
  3. Step 3: Cross multiply
    103,621.45x = 155,432.13 × 68,552.95
  4. Step 4: Simplify right side
    103,621.45x = 10,655,331,036.28
  5. Step 5: Solve for x
    x = 10,655,331,036.28/103,621.45
  6. Step 6: Final answer
    x = 102,829.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.