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Finding the Fourth Proportional to 124,999.84, 172,499.84 and 68,411.52

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Solution

The fourth proportional to 124,999.84, 172,499.84 and 68,411.52 is: 94,407.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,999.84 : 172,499.84 = 68,411.52 : x
  2. Step 2: Convert to fraction form
    124,999.84/172,499.84 = 68,411.52/x
  3. Step 3: Cross multiply
    124,999.84x = 172,499.84 × 68,411.52
  4. Step 4: Simplify right side
    124,999.84x = 11,800,976,254.16
  5. Step 5: Solve for x
    x = 11,800,976,254.16/124,999.84
  6. Step 6: Final answer
    x = 94,407.93

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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.