Home / 131,215.20-181,164.14-100,947.12

Finding the Fourth Proportional to 131,215.20, 181,164.14 and 100,947.12

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Solution

The fourth proportional to 131,215.20, 181,164.14 and 100,947.12 is: 139,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,215.20 : 181,164.14 = 100,947.12 : x
  2. Step 2: Convert to fraction form
    131,215.20/181,164.14 = 100,947.12/x
  3. Step 3: Cross multiply
    131,215.20x = 181,164.14 × 100,947.12
  4. Step 4: Simplify right side
    131,215.20x = 18,287,998,733.46
  5. Step 5: Solve for x
    x = 18,287,998,733.46/131,215.20
  6. Step 6: Final answer
    x = 139,374.08

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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.