Home / 143,685.30-215,514.65-67,766.42

Finding the Fourth Proportional to 143,685.30, 215,514.65 and 67,766.42

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Solution

The fourth proportional to 143,685.30, 215,514.65 and 67,766.42 is: 101,643.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,685.30 : 215,514.65 = 67,766.42 : x
  2. Step 2: Convert to fraction form
    143,685.30/215,514.65 = 67,766.42/x
  3. Step 3: Cross multiply
    143,685.30x = 215,514.65 × 67,766.42
  4. Step 4: Simplify right side
    143,685.30x = 14,604,656,288.05
  5. Step 5: Solve for x
    x = 14,604,656,288.05/143,685.30
  6. Step 6: Final answer
    x = 101,643.36

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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.