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Finding the Fourth Proportional to 157,231.20, 235,587.60 and 130,792.80

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Solution

The fourth proportional to 157,231.20, 235,587.60 and 130,792.80 is: 195,973.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,231.20 : 235,587.60 = 130,792.80 : x
  2. Step 2: Convert to fraction form
    157,231.20/235,587.60 = 130,792.80/x
  3. Step 3: Cross multiply
    157,231.20x = 235,587.60 × 130,792.80
  4. Step 4: Simplify right side
    157,231.20x = 30,813,161,849.28
  5. Step 5: Solve for x
    x = 30,813,161,849.28/157,231.20
  6. Step 6: Final answer
    x = 195,973.58

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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.