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Finding the Fourth Proportional to 156,241.70, 215,626.80 and 88,271.14

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Solution

The fourth proportional to 156,241.70, 215,626.80 and 88,271.14 is: 121,821.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,241.70 : 215,626.80 = 88,271.14 : x
  2. Step 2: Convert to fraction form
    156,241.70/215,626.80 = 88,271.14/x
  3. Step 3: Cross multiply
    156,241.70x = 215,626.80 × 88,271.14
  4. Step 4: Simplify right side
    156,241.70x = 19,033,623,450.55
  5. Step 5: Solve for x
    x = 19,033,623,450.55/156,241.70
  6. Step 6: Final answer
    x = 121,821.66

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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.