Home / 143,671.55-215,432.40-53,640.14

Finding the Fourth Proportional to 143,671.55, 215,432.40 and 53,640.14

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Solution

The fourth proportional to 143,671.55, 215,432.40 and 53,640.14 is: 80,432.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,671.55 : 215,432.40 = 53,640.14 : x
  2. Step 2: Convert to fraction form
    143,671.55/215,432.40 = 53,640.14/x
  3. Step 3: Cross multiply
    143,671.55x = 215,432.40 × 53,640.14
  4. Step 4: Simplify right side
    143,671.55x = 11,555,824,096.54
  5. Step 5: Solve for x
    x = 11,555,824,096.54/143,671.55
  6. Step 6: Final answer
    x = 80,432.24

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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.