Home / 120,434.80-166,170-69,463.12

Finding the Fourth Proportional to 120,434.80, 166,170 and 69,463.12

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Solution

The fourth proportional to 120,434.80, 166,170 and 69,463.12 is: 95,841.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,434.80 : 166,170 = 69,463.12 : x
  2. Step 2: Convert to fraction form
    120,434.80/166,170 = 69,463.12/x
  3. Step 3: Cross multiply
    120,434.80x = 166,170 × 69,463.12
  4. Step 4: Simplify right side
    120,434.80x = 11,542,686,650.40
  5. Step 5: Solve for x
    x = 11,542,686,650.40/120,434.80
  6. Step 6: Final answer
    x = 95,841.79

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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.