Home / 100,214.73-138,229.88-64,449.99

Finding the Fourth Proportional to 100,214.73, 138,229.88 and 64,449.99

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Solution

The fourth proportional to 100,214.73, 138,229.88 and 64,449.99 is: 88,898.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,214.73 : 138,229.88 = 64,449.99 : x
  2. Step 2: Convert to fraction form
    100,214.73/138,229.88 = 64,449.99/x
  3. Step 3: Cross multiply
    100,214.73x = 138,229.88 × 64,449.99
  4. Step 4: Simplify right side
    100,214.73x = 8,908,914,061.45
  5. Step 5: Solve for x
    x = 8,908,914,061.45/100,214.73
  6. Step 6: Final answer
    x = 88,898.25

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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.