Home / 142,285.20-213,431.45-67,387.74

Finding the Fourth Proportional to 142,285.20, 213,431.45 and 67,387.74

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Solution

The fourth proportional to 142,285.20, 213,431.45 and 67,387.74 is: 101,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,285.20 : 213,431.45 = 67,387.74 : x
  2. Step 2: Convert to fraction form
    142,285.20/213,431.45 = 67,387.74/x
  3. Step 3: Cross multiply
    142,285.20x = 213,431.45 × 67,387.74
  4. Step 4: Simplify right side
    142,285.20x = 14,382,662,723.48
  5. Step 5: Solve for x
    x = 14,382,662,723.48/142,285.20
  6. Step 6: Final answer
    x = 101,083.34

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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.