Home / 125,135.48-172,689.75-71,419.41

Finding the Fourth Proportional to 125,135.48, 172,689.75 and 71,419.41

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Solution

The fourth proportional to 125,135.48, 172,689.75 and 71,419.41 is: 98,560.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,135.48 : 172,689.75 = 71,419.41 : x
  2. Step 2: Convert to fraction form
    125,135.48/172,689.75 = 71,419.41/x
  3. Step 3: Cross multiply
    125,135.48x = 172,689.75 × 71,419.41
  4. Step 4: Simplify right side
    125,135.48x = 12,333,400,058.05
  5. Step 5: Solve for x
    x = 12,333,400,058.05/125,135.48
  6. Step 6: Final answer
    x = 98,560.37

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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.