Home / 99,744.12-137,652.20-57,305.40

Finding the Fourth Proportional to 99,744.12, 137,652.20 and 57,305.40

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Solution

The fourth proportional to 99,744.12, 137,652.20 and 57,305.40 is: 79,084.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,744.12 : 137,652.20 = 57,305.40 : x
  2. Step 2: Convert to fraction form
    99,744.12/137,652.20 = 57,305.40/x
  3. Step 3: Cross multiply
    99,744.12x = 137,652.20 × 57,305.40
  4. Step 4: Simplify right side
    99,744.12x = 7,888,214,381.88
  5. Step 5: Solve for x
    x = 7,888,214,381.88/99,744.12
  6. Step 6: Final answer
    x = 79,084.51

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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.