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Finding the Fourth Proportional to 131,809.76, 197,779.44 and 65,247.20

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Solution

The fourth proportional to 131,809.76, 197,779.44 and 65,247.20 is: 97,902.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.76 : 197,779.44 = 65,247.20 : x
  2. Step 2: Convert to fraction form
    131,809.76/197,779.44 = 65,247.20/x
  3. Step 3: Cross multiply
    131,809.76x = 197,779.44 × 65,247.20
  4. Step 4: Simplify right side
    131,809.76x = 12,904,554,677.57
  5. Step 5: Solve for x
    x = 12,904,554,677.57/131,809.76
  6. Step 6: Final answer
    x = 97,902.88

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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.