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Finding the Fourth Proportional to 185,616.60, 278,480.52 and 73,312.80

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Solution

The fourth proportional to 185,616.60, 278,480.52 and 73,312.80 is: 109,991.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,616.60 : 278,480.52 = 73,312.80 : x
  2. Step 2: Convert to fraction form
    185,616.60/278,480.52 = 73,312.80/x
  3. Step 3: Cross multiply
    185,616.60x = 278,480.52 × 73,312.80
  4. Step 4: Simplify right side
    185,616.60x = 20,416,186,666.66
  5. Step 5: Solve for x
    x = 20,416,186,666.66/185,616.60
  6. Step 6: Final answer
    x = 109,991.17

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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.