Home / 158,002.31-218,043.17-86,382.30

Finding the Fourth Proportional to 158,002.31, 218,043.17 and 86,382.30

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Solution

The fourth proportional to 158,002.31, 218,043.17 and 86,382.30 is: 119,207.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,002.31 : 218,043.17 = 86,382.30 : x
  2. Step 2: Convert to fraction form
    158,002.31/218,043.17 = 86,382.30/x
  3. Step 3: Cross multiply
    158,002.31x = 218,043.17 × 86,382.30
  4. Step 4: Simplify right side
    158,002.31x = 18,835,070,091.98
  5. Step 5: Solve for x
    x = 18,835,070,091.98/158,002.31
  6. Step 6: Final answer
    x = 119,207.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.