Home / 103,278.60-142,512.75-57,947.13

Finding the Fourth Proportional to 103,278.60, 142,512.75 and 57,947.13

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Solution

The fourth proportional to 103,278.60, 142,512.75 and 57,947.13 is: 79,960.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,278.60 : 142,512.75 = 57,947.13 : x
  2. Step 2: Convert to fraction form
    103,278.60/142,512.75 = 57,947.13/x
  3. Step 3: Cross multiply
    103,278.60x = 142,512.75 × 57,947.13
  4. Step 4: Simplify right side
    103,278.60x = 8,258,204,850.91
  5. Step 5: Solve for x
    x = 8,258,204,850.91/103,278.60
  6. Step 6: Final answer
    x = 79,960.46

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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.