Home / 317,769.60-476,653.86-81,112.20

Finding the Fourth Proportional to 317,769.60, 476,653.86 and 81,112.20

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Solution

The fourth proportional to 317,769.60, 476,653.86 and 81,112.20 is: 121,668.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,769.60 : 476,653.86 = 81,112.20 : x
  2. Step 2: Convert to fraction form
    317,769.60/476,653.86 = 81,112.20/x
  3. Step 3: Cross multiply
    317,769.60x = 476,653.86 × 81,112.20
  4. Step 4: Simplify right side
    317,769.60x = 38,662,443,223.09
  5. Step 5: Solve for x
    x = 38,662,443,223.09/317,769.60
  6. Step 6: Final answer
    x = 121,668.16

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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.