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Finding the Fourth Proportional to 157,191.20, 235,786.80 and 107,424.80

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Solution

The fourth proportional to 157,191.20, 235,786.80 and 107,424.80 is: 161,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,191.20 : 235,786.80 = 107,424.80 : x
  2. Step 2: Convert to fraction form
    157,191.20/235,786.80 = 107,424.80/x
  3. Step 3: Cross multiply
    157,191.20x = 235,786.80 × 107,424.80
  4. Step 4: Simplify right side
    157,191.20x = 25,329,349,832.64
  5. Step 5: Solve for x
    x = 25,329,349,832.64/157,191.20
  6. Step 6: Final answer
    x = 161,137.20

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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.