Home / 137,637.20-205,354.18-122,668.40

Finding the Fourth Proportional to 137,637.20, 205,354.18 and 122,668.40

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Solution

The fourth proportional to 137,637.20, 205,354.18 and 122,668.40 is: 183,020.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,637.20 : 205,354.18 = 122,668.40 : x
  2. Step 2: Convert to fraction form
    137,637.20/205,354.18 = 122,668.40/x
  3. Step 3: Cross multiply
    137,637.20x = 205,354.18 × 122,668.40
  4. Step 4: Simplify right side
    137,637.20x = 25,190,468,693.91
  5. Step 5: Solve for x
    x = 25,190,468,693.91/137,637.20
  6. Step 6: Final answer
    x = 183,020.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.