Home / 100,594.12-138,767.83-68,330.40

Finding the Fourth Proportional to 100,594.12, 138,767.83 and 68,330.40

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Solution

The fourth proportional to 100,594.12, 138,767.83 and 68,330.40 is: 94,260.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,594.12 : 138,767.83 = 68,330.40 : x
  2. Step 2: Convert to fraction form
    100,594.12/138,767.83 = 68,330.40/x
  3. Step 3: Cross multiply
    100,594.12x = 138,767.83 × 68,330.40
  4. Step 4: Simplify right side
    100,594.12x = 9,482,061,331.03
  5. Step 5: Solve for x
    x = 9,482,061,331.03/100,594.12
  6. Step 6: Final answer
    x = 94,260.59

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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.