Home / 99,319.74-137,091.25-67,507.05

Finding the Fourth Proportional to 99,319.74, 137,091.25 and 67,507.05

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Solution

The fourth proportional to 99,319.74, 137,091.25 and 67,507.05 is: 93,180.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,319.74 : 137,091.25 = 67,507.05 : x
  2. Step 2: Convert to fraction form
    99,319.74/137,091.25 = 67,507.05/x
  3. Step 3: Cross multiply
    99,319.74x = 137,091.25 × 67,507.05
  4. Step 4: Simplify right side
    99,319.74x = 9,254,625,868.31
  5. Step 5: Solve for x
    x = 9,254,625,868.31/99,319.74
  6. Step 6: Final answer
    x = 93,180.13

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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.