Home / 157,739.70-217,679.68-86,119.72

Finding the Fourth Proportional to 157,739.70, 217,679.68 and 86,119.72

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Solution

The fourth proportional to 157,739.70, 217,679.68 and 86,119.72 is: 118,844.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,739.70 : 217,679.68 = 86,119.72 : x
  2. Step 2: Convert to fraction form
    157,739.70/217,679.68 = 86,119.72/x
  3. Step 3: Cross multiply
    157,739.70x = 217,679.68 × 86,119.72
  4. Step 4: Simplify right side
    157,739.70x = 18,746,513,394.76
  5. Step 5: Solve for x
    x = 18,746,513,394.76/157,739.70
  6. Step 6: Final answer
    x = 118,844.61

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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.