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Finding the Fourth Proportional to 124,806.08, 172,348 and 80,172.48

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Solution

The fourth proportional to 124,806.08, 172,348 and 80,172.48 is: 110,712.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,806.08 : 172,348 = 80,172.48 : x
  2. Step 2: Convert to fraction form
    124,806.08/172,348 = 80,172.48/x
  3. Step 3: Cross multiply
    124,806.08x = 172,348 × 80,172.48
  4. Step 4: Simplify right side
    124,806.08x = 13,817,566,583.04
  5. Step 5: Solve for x
    x = 13,817,566,583.04/124,806.08
  6. Step 6: Final answer
    x = 110,712.29

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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.