Home / 157,769.66-217,721.04-86,149.64

Finding the Fourth Proportional to 157,769.66, 217,721.04 and 86,149.64

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Solution

The fourth proportional to 157,769.66, 217,721.04 and 86,149.64 is: 118,885.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,769.66 : 217,721.04 = 86,149.64 : x
  2. Step 2: Convert to fraction form
    157,769.66/217,721.04 = 86,149.64/x
  3. Step 3: Cross multiply
    157,769.66x = 217,721.04 × 86,149.64
  4. Step 4: Simplify right side
    157,769.66x = 18,756,589,216.43
  5. Step 5: Solve for x
    x = 18,756,589,216.43/157,769.66
  6. Step 6: Final answer
    x = 118,885.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.