Home / 143,934.30-215,901.45-138,102.30

Finding the Fourth Proportional to 143,934.30, 215,901.45 and 138,102.30

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Solution

The fourth proportional to 143,934.30, 215,901.45 and 138,102.30 is: 207,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,934.30 : 215,901.45 = 138,102.30 : x
  2. Step 2: Convert to fraction form
    143,934.30/215,901.45 = 138,102.30/x
  3. Step 3: Cross multiply
    143,934.30x = 215,901.45 × 138,102.30
  4. Step 4: Simplify right side
    143,934.30x = 29,816,486,818.34
  5. Step 5: Solve for x
    x = 29,816,486,818.34/143,934.30
  6. Step 6: Final answer
    x = 207,153.45

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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.