Home / 157,943.06-217,964.91-86,327.72

Finding the Fourth Proportional to 157,943.06, 217,964.91 and 86,327.72

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Solution

The fourth proportional to 157,943.06, 217,964.91 and 86,327.72 is: 119,134.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,943.06 : 217,964.91 = 86,327.72 : x
  2. Step 2: Convert to fraction form
    157,943.06/217,964.91 = 86,327.72/x
  3. Step 3: Cross multiply
    157,943.06x = 217,964.91 × 86,327.72
  4. Step 4: Simplify right side
    157,943.06x = 18,816,413,720.31
  5. Step 5: Solve for x
    x = 18,816,413,720.31/157,943.06
  6. Step 6: Final answer
    x = 119,134.16

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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.