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Finding the Fourth Proportional to 136,380.48, 188,204.88 and 79,802.76

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Solution

The fourth proportional to 136,380.48, 188,204.88 and 79,802.76 is: 110,127.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,380.48 : 188,204.88 = 79,802.76 : x
  2. Step 2: Convert to fraction form
    136,380.48/188,204.88 = 79,802.76/x
  3. Step 3: Cross multiply
    136,380.48x = 188,204.88 × 79,802.76
  4. Step 4: Simplify right side
    136,380.48x = 15,019,268,869.47
  5. Step 5: Solve for x
    x = 15,019,268,869.47/136,380.48
  6. Step 6: Final answer
    x = 110,127.70

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1.5x scale

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.