Home / 102,497.90-141,432.95-57,170.57

Finding the Fourth Proportional to 102,497.90, 141,432.95 and 57,170.57

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Solution

The fourth proportional to 102,497.90, 141,432.95 and 57,170.57 is: 78,887.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,497.90 : 141,432.95 = 57,170.57 : x
  2. Step 2: Convert to fraction form
    102,497.90/141,432.95 = 57,170.57/x
  3. Step 3: Cross multiply
    102,497.90x = 141,432.95 × 57,170.57
  4. Step 4: Simplify right side
    102,497.90x = 8,085,801,375.26
  5. Step 5: Solve for x
    x = 8,085,801,375.26/102,497.90
  6. Step 6: Final answer
    x = 78,887.49

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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.