Home / 157,738.72-217,680.56-86,120.16

Finding the Fourth Proportional to 157,738.72, 217,680.56 and 86,120.16

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Solution

The fourth proportional to 157,738.72, 217,680.56 and 86,120.16 is: 118,846.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,738.72 : 217,680.56 = 86,120.16 : x
  2. Step 2: Convert to fraction form
    157,738.72/217,680.56 = 86,120.16/x
  3. Step 3: Cross multiply
    157,738.72x = 217,680.56 × 86,120.16
  4. Step 4: Simplify right side
    157,738.72x = 18,746,684,656.09
  5. Step 5: Solve for x
    x = 18,746,684,656.09/157,738.72
  6. Step 6: Final answer
    x = 118,846.44

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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.