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Finding the Fourth Proportional to 159,713.70, 239,570.55 and 131,720.10

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Solution

The fourth proportional to 159,713.70, 239,570.55 and 131,720.10 is: 197,580.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,713.70 : 239,570.55 = 131,720.10 : x
  2. Step 2: Convert to fraction form
    159,713.70/239,570.55 = 131,720.10/x
  3. Step 3: Cross multiply
    159,713.70x = 239,570.55 × 131,720.10
  4. Step 4: Simplify right side
    159,713.70x = 31,556,256,803.06
  5. Step 5: Solve for x
    x = 31,556,256,803.06/159,713.70
  6. Step 6: Final answer
    x = 197,580.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.