Home / 142,385.76-213,928.80-107,218.72

Finding the Fourth Proportional to 142,385.76, 213,928.80 and 107,218.72

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Solution

The fourth proportional to 142,385.76, 213,928.80 and 107,218.72 is: 161,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,385.76 : 213,928.80 = 107,218.72 : x
  2. Step 2: Convert to fraction form
    142,385.76/213,928.80 = 107,218.72/x
  3. Step 3: Cross multiply
    142,385.76x = 213,928.80 × 107,218.72
  4. Step 4: Simplify right side
    142,385.76x = 22,937,172,107.14
  5. Step 5: Solve for x
    x = 22,937,172,107.14/142,385.76
  6. Step 6: Final answer
    x = 161,091.76

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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.