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Finding the Fourth Proportional to 121,111.61, 167,027.67 and 84,794.45

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Solution

The fourth proportional to 121,111.61, 167,027.67 and 84,794.45 is: 116,941.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,111.61 : 167,027.67 = 84,794.45 : x
  2. Step 2: Convert to fraction form
    121,111.61/167,027.67 = 84,794.45/x
  3. Step 3: Cross multiply
    121,111.61x = 167,027.67 × 84,794.45
  4. Step 4: Simplify right side
    121,111.61x = 14,163,018,577.29
  5. Step 5: Solve for x
    x = 14,163,018,577.29/121,111.61
  6. Step 6: Final answer
    x = 116,941.88

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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.