Home / 143,509.38-215,281.35-47,449.86

Finding the Fourth Proportional to 143,509.38, 215,281.35 and 47,449.86

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Solution

The fourth proportional to 143,509.38, 215,281.35 and 47,449.86 is: 71,180.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,509.38 : 215,281.35 = 47,449.86 : x
  2. Step 2: Convert to fraction form
    143,509.38/215,281.35 = 47,449.86/x
  3. Step 3: Cross multiply
    143,509.38x = 215,281.35 × 47,449.86
  4. Step 4: Simplify right side
    143,509.38x = 10,215,069,918.11
  5. Step 5: Solve for x
    x = 10,215,069,918.11/143,509.38
  6. Step 6: Final answer
    x = 71,180.50

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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.