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Finding the Fourth Proportional to 122,711.40, 184,068.80 and 80,859.40

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Solution

The fourth proportional to 122,711.40, 184,068.80 and 80,859.40 is: 121,290.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,711.40 : 184,068.80 = 80,859.40 : x
  2. Step 2: Convert to fraction form
    122,711.40/184,068.80 = 80,859.40/x
  3. Step 3: Cross multiply
    122,711.40x = 184,068.80 × 80,859.40
  4. Step 4: Simplify right side
    122,711.40x = 14,883,692,726.72
  5. Step 5: Solve for x
    x = 14,883,692,726.72/122,711.40
  6. Step 6: Final answer
    x = 121,290.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.