Home / 128,264.31-177,003.44-71,675.68

Finding the Fourth Proportional to 128,264.31, 177,003.44 and 71,675.68

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Solution

The fourth proportional to 128,264.31, 177,003.44 and 71,675.68 is: 98,911.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,264.31 : 177,003.44 = 71,675.68 : x
  2. Step 2: Convert to fraction form
    128,264.31/177,003.44 = 71,675.68/x
  3. Step 3: Cross multiply
    128,264.31x = 177,003.44 × 71,675.68
  4. Step 4: Simplify right side
    128,264.31x = 12,686,841,565.96
  5. Step 5: Solve for x
    x = 12,686,841,565.96/128,264.31
  6. Step 6: Final answer
    x = 98,911.71

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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.