Home / 143,342.76-215,180.28-76,912.86

Finding the Fourth Proportional to 143,342.76, 215,180.28 and 76,912.86

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Solution

The fourth proportional to 143,342.76, 215,180.28 and 76,912.86 is: 115,458.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,342.76 : 215,180.28 = 76,912.86 : x
  2. Step 2: Convert to fraction form
    143,342.76/215,180.28 = 76,912.86/x
  3. Step 3: Cross multiply
    143,342.76x = 215,180.28 × 76,912.86
  4. Step 4: Simplify right side
    143,342.76x = 16,550,130,750.40
  5. Step 5: Solve for x
    x = 16,550,130,750.40/143,342.76
  6. Step 6: Final answer
    x = 115,458.44

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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.