Home / 198,007.20-297,010.80-127,148.40

Finding the Fourth Proportional to 198,007.20, 297,010.80 and 127,148.40

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Solution

The fourth proportional to 198,007.20, 297,010.80 and 127,148.40 is: 190,722.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,007.20 : 297,010.80 = 127,148.40 : x
  2. Step 2: Convert to fraction form
    198,007.20/297,010.80 = 127,148.40/x
  3. Step 3: Cross multiply
    198,007.20x = 297,010.80 × 127,148.40
  4. Step 4: Simplify right side
    198,007.20x = 37,764,448,002.72
  5. Step 5: Solve for x
    x = 37,764,448,002.72/198,007.20
  6. Step 6: Final answer
    x = 190,722.60

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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.