Home / 143,530.48-215,278.80-38,357.56

Finding the Fourth Proportional to 143,530.48, 215,278.80 and 38,357.56

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Solution

The fourth proportional to 143,530.48, 215,278.80 and 38,357.56 is: 57,531.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,530.48 : 215,278.80 = 38,357.56 : x
  2. Step 2: Convert to fraction form
    143,530.48/215,278.80 = 38,357.56/x
  3. Step 3: Cross multiply
    143,530.48x = 215,278.80 × 38,357.56
  4. Step 4: Simplify right side
    143,530.48x = 8,257,569,487.73
  5. Step 5: Solve for x
    x = 8,257,569,487.73/143,530.48
  6. Step 6: Final answer
    x = 57,531.82

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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.