Home / 132,399.40-198,599.10-85,160.20

Finding the Fourth Proportional to 132,399.40, 198,599.10 and 85,160.20

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Solution

The fourth proportional to 132,399.40, 198,599.10 and 85,160.20 is: 127,740.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,399.40 : 198,599.10 = 85,160.20 : x
  2. Step 2: Convert to fraction form
    132,399.40/198,599.10 = 85,160.20/x
  3. Step 3: Cross multiply
    132,399.40x = 198,599.10 × 85,160.20
  4. Step 4: Simplify right side
    132,399.40x = 16,912,739,075.82
  5. Step 5: Solve for x
    x = 16,912,739,075.82/132,399.40
  6. Step 6: Final answer
    x = 127,740.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.