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Finding the Fourth Proportional to 131,697.96, 181,741.80 and 71,267.28

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Solution

The fourth proportional to 131,697.96, 181,741.80 and 71,267.28 is: 98,348.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,697.96 : 181,741.80 = 71,267.28 : x
  2. Step 2: Convert to fraction form
    131,697.96/181,741.80 = 71,267.28/x
  3. Step 3: Cross multiply
    131,697.96x = 181,741.80 × 71,267.28
  4. Step 4: Simplify right side
    131,697.96x = 12,952,243,748.30
  5. Step 5: Solve for x
    x = 12,952,243,748.30/131,697.96
  6. Step 6: Final answer
    x = 98,348.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.