Home / 157,845.79-217,823.61-86,226.13

Finding the Fourth Proportional to 157,845.79, 217,823.61 and 86,226.13

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Solution

The fourth proportional to 157,845.79, 217,823.61 and 86,226.13 is: 118,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,845.79 : 217,823.61 = 86,226.13 : x
  2. Step 2: Convert to fraction form
    157,845.79/217,823.61 = 86,226.13/x
  3. Step 3: Cross multiply
    157,845.79x = 217,823.61 × 86,226.13
  4. Step 4: Simplify right side
    157,845.79x = 18,782,086,912.93
  5. Step 5: Solve for x
    x = 18,782,086,912.93/157,845.79
  6. Step 6: Final answer
    x = 118,990.10

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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.