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Finding the Fourth Proportional to 121,032, 167,024.16 and 68,040

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Solution

The fourth proportional to 121,032, 167,024.16 and 68,040 is: 93,895.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,032 : 167,024.16 = 68,040 : x
  2. Step 2: Convert to fraction form
    121,032/167,024.16 = 68,040/x
  3. Step 3: Cross multiply
    121,032x = 167,024.16 × 68,040
  4. Step 4: Simplify right side
    121,032x = 11,364,323,846.40
  5. Step 5: Solve for x
    x = 11,364,323,846.40/121,032
  6. Step 6: Final answer
    x = 93,895.20

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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.