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Finding the Fourth Proportional to 156,874.60, 216,488.63 and 85,254.63

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Solution

The fourth proportional to 156,874.60, 216,488.63 and 85,254.63 is: 117,652.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,874.60 : 216,488.63 = 85,254.63 : x
  2. Step 2: Convert to fraction form
    156,874.60/216,488.63 = 85,254.63/x
  3. Step 3: Cross multiply
    156,874.60x = 216,488.63 × 85,254.63
  4. Step 4: Simplify right side
    156,874.60x = 18,456,659,074.83
  5. Step 5: Solve for x
    x = 18,456,659,074.83/156,874.60
  6. Step 6: Final answer
    x = 117,652.31

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1.5x scale

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.