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Finding the Fourth Proportional to 159,928.80, 239,432.40 and 97,720.80

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Solution

The fourth proportional to 159,928.80, 239,432.40 and 97,720.80 is: 146,299.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,928.80 : 239,432.40 = 97,720.80 : x
  2. Step 2: Convert to fraction form
    159,928.80/239,432.40 = 97,720.80/x
  3. Step 3: Cross multiply
    159,928.80x = 239,432.40 × 97,720.80
  4. Step 4: Simplify right side
    159,928.80x = 23,397,525,673.92
  5. Step 5: Solve for x
    x = 23,397,525,673.92/159,928.80
  6. Step 6: Final answer
    x = 146,299.64

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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.