Home / 99,512.55-137,327.40-57,072.60

Finding the Fourth Proportional to 99,512.55, 137,327.40 and 57,072.60

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Solution

The fourth proportional to 99,512.55, 137,327.40 and 57,072.60 is: 78,760.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,512.55 : 137,327.40 = 57,072.60 : x
  2. Step 2: Convert to fraction form
    99,512.55/137,327.40 = 57,072.60/x
  3. Step 3: Cross multiply
    99,512.55x = 137,327.40 × 57,072.60
  4. Step 4: Simplify right side
    99,512.55x = 7,837,631,769.24
  5. Step 5: Solve for x
    x = 7,837,631,769.24/99,512.55
  6. Step 6: Final answer
    x = 78,760.23

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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.