Home / 102,870.40-141,974.22-57,550.90

Finding the Fourth Proportional to 102,870.40, 141,974.22 and 57,550.90

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Solution

The fourth proportional to 102,870.40, 141,974.22 and 57,550.90 is: 79,427.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,870.40 : 141,974.22 = 57,550.90 : x
  2. Step 2: Convert to fraction form
    102,870.40/141,974.22 = 57,550.90/x
  3. Step 3: Cross multiply
    102,870.40x = 141,974.22 × 57,550.90
  4. Step 4: Simplify right side
    102,870.40x = 8,170,744,137.80
  5. Step 5: Solve for x
    x = 8,170,744,137.80/102,870.40
  6. Step 6: Final answer
    x = 79,427.55

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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.