Home / 192,005.20-288,007.80-121,146.40

Finding the Fourth Proportional to 192,005.20, 288,007.80 and 121,146.40

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Solution

The fourth proportional to 192,005.20, 288,007.80 and 121,146.40 is: 181,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,005.20 : 288,007.80 = 121,146.40 : x
  2. Step 2: Convert to fraction form
    192,005.20/288,007.80 = 121,146.40/x
  3. Step 3: Cross multiply
    192,005.20x = 288,007.80 × 121,146.40
  4. Step 4: Simplify right side
    192,005.20x = 34,891,108,141.92
  5. Step 5: Solve for x
    x = 34,891,108,141.92/192,005.20
  6. Step 6: Final answer
    x = 181,719.60

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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.