Home / 124,808.88-172,248.16-71,111.28

Finding the Fourth Proportional to 124,808.88, 172,248.16 and 71,111.28

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Solution

The fourth proportional to 124,808.88, 172,248.16 and 71,111.28 is: 98,140.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,808.88 : 172,248.16 = 71,111.28 : x
  2. Step 2: Convert to fraction form
    124,808.88/172,248.16 = 71,111.28/x
  3. Step 3: Cross multiply
    124,808.88x = 172,248.16 × 71,111.28
  4. Step 4: Simplify right side
    124,808.88x = 12,248,787,135.24
  5. Step 5: Solve for x
    x = 12,248,787,135.24/124,808.88
  6. Step 6: Final answer
    x = 98,140.35

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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.