Home / 143,521.20-215,281.80-43,680.60

Finding the Fourth Proportional to 143,521.20, 215,281.80 and 43,680.60

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Solution

The fourth proportional to 143,521.20, 215,281.80 and 43,680.60 is: 65,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,521.20 : 215,281.80 = 43,680.60 : x
  2. Step 2: Convert to fraction form
    143,521.20/215,281.80 = 43,680.60/x
  3. Step 3: Cross multiply
    143,521.20x = 215,281.80 × 43,680.60
  4. Step 4: Simplify right side
    143,521.20x = 9,403,638,193.08
  5. Step 5: Solve for x
    x = 9,403,638,193.08/143,521.20
  6. Step 6: Final answer
    x = 65,520.90

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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.