Home / 142,859.20-213,938.88-100,635.52

Finding the Fourth Proportional to 142,859.20, 213,938.88 and 100,635.52

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Solution

The fourth proportional to 142,859.20, 213,938.88 and 100,635.52 is: 150,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,859.20 : 213,938.88 = 100,635.52 : x
  2. Step 2: Convert to fraction form
    142,859.20/213,938.88 = 100,635.52/x
  3. Step 3: Cross multiply
    142,859.20x = 213,938.88 × 100,635.52
  4. Step 4: Simplify right side
    142,859.20x = 21,529,850,437.02
  5. Step 5: Solve for x
    x = 21,529,850,437.02/142,859.20
  6. Step 6: Final answer
    x = 150,706.78

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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.