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Finding the Fourth Proportional to 156,271.85, 215,656.19 and 84,651.87

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Solution

The fourth proportional to 156,271.85, 215,656.19 and 84,651.87 is: 116,820.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,271.85 : 215,656.19 = 84,651.87 : x
  2. Step 2: Convert to fraction form
    156,271.85/215,656.19 = 84,651.87/x
  3. Step 3: Cross multiply
    156,271.85x = 215,656.19 × 84,651.87
  4. Step 4: Simplify right side
    156,271.85x = 18,255,699,337.32
  5. Step 5: Solve for x
    x = 18,255,699,337.32/156,271.85
  6. Step 6: Final answer
    x = 116,820.14

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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.