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Finding the Fourth Proportional to 156,871.36, 216,482.22 and 85,251.22

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Solution

The fourth proportional to 156,871.36, 216,482.22 and 85,251.22 is: 117,646.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,871.36 : 216,482.22 = 85,251.22 : x
  2. Step 2: Convert to fraction form
    156,871.36/216,482.22 = 85,251.22/x
  3. Step 3: Cross multiply
    156,871.36x = 216,482.22 × 85,251.22
  4. Step 4: Simplify right side
    156,871.36x = 18,455,373,363.31
  5. Step 5: Solve for x
    x = 18,455,373,363.31/156,871.36
  6. Step 6: Final answer
    x = 117,646.54

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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.