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Finding the Fourth Proportional to 192,116.40, 288,001.80 and 121,959.60

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Solution

The fourth proportional to 192,116.40, 288,001.80 and 121,959.60 is: 182,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,116.40 : 288,001.80 = 121,959.60 : x
  2. Step 2: Convert to fraction form
    192,116.40/288,001.80 = 121,959.60/x
  3. Step 3: Cross multiply
    192,116.40x = 288,001.80 × 121,959.60
  4. Step 4: Simplify right side
    192,116.40x = 35,124,584,327.28
  5. Step 5: Solve for x
    x = 35,124,584,327.28/192,116.40
  6. Step 6: Final answer
    x = 182,829.70

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1.5x scale

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.