Home / 99,815.40-137,778.30-59,542.20

Finding the Fourth Proportional to 99,815.40, 137,778.30 and 59,542.20

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Solution

The fourth proportional to 99,815.40, 137,778.30 and 59,542.20 is: 82,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815.40 : 137,778.30 = 59,542.20 : x
  2. Step 2: Convert to fraction form
    99,815.40/137,778.30 = 59,542.20/x
  3. Step 3: Cross multiply
    99,815.40x = 137,778.30 × 59,542.20
  4. Step 4: Simplify right side
    99,815.40x = 8,203,623,094.26
  5. Step 5: Solve for x
    x = 8,203,623,094.26/99,815.40
  6. Step 6: Final answer
    x = 82,187.95

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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.