Home / 126,209.76-189,387-51,316.08

Finding the Fourth Proportional to 126,209.76, 189,387 and 51,316.08

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Solution

The fourth proportional to 126,209.76, 189,387 and 51,316.08 is: 77,003.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,209.76 : 189,387 = 51,316.08 : x
  2. Step 2: Convert to fraction form
    126,209.76/189,387 = 51,316.08/x
  3. Step 3: Cross multiply
    126,209.76x = 189,387 × 51,316.08
  4. Step 4: Simplify right side
    126,209.76x = 9,718,598,442.96
  5. Step 5: Solve for x
    x = 9,718,598,442.96/126,209.76
  6. Step 6: Final answer
    x = 77,003.54

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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.