Home / 140,129.22-193,382.43-76,471.12

Finding the Fourth Proportional to 140,129.22, 193,382.43 and 76,471.12

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Solution

The fourth proportional to 140,129.22, 193,382.43 and 76,471.12 is: 105,532.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,129.22 : 193,382.43 = 76,471.12 : x
  2. Step 2: Convert to fraction form
    140,129.22/193,382.43 = 76,471.12/x
  3. Step 3: Cross multiply
    140,129.22x = 193,382.43 × 76,471.12
  4. Step 4: Simplify right side
    140,129.22x = 14,788,171,010.42
  5. Step 5: Solve for x
    x = 14,788,171,010.42/140,129.22
  6. Step 6: Final answer
    x = 105,532.39

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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.