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Finding the Fourth Proportional to 159,638.80, 239,458.20 and 97,430.80

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Solution

The fourth proportional to 159,638.80, 239,458.20 and 97,430.80 is: 146,146.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,638.80 : 239,458.20 = 97,430.80 : x
  2. Step 2: Convert to fraction form
    159,638.80/239,458.20 = 97,430.80/x
  3. Step 3: Cross multiply
    159,638.80x = 239,458.20 × 97,430.80
  4. Step 4: Simplify right side
    159,638.80x = 23,330,603,992.56
  5. Step 5: Solve for x
    x = 23,330,603,992.56/159,638.80
  6. Step 6: Final answer
    x = 146,146.20

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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.