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Finding the Fourth Proportional to 156,871.46, 216,483.97 and 85,251.46

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Solution

The fourth proportional to 156,871.46, 216,483.97 and 85,251.46 is: 117,647.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,871.46 : 216,483.97 = 85,251.46 : x
  2. Step 2: Convert to fraction form
    156,871.46/216,483.97 = 85,251.46/x
  3. Step 3: Cross multiply
    156,871.46x = 216,483.97 × 85,251.46
  4. Step 4: Simplify right side
    156,871.46x = 18,455,574,509.10
  5. Step 5: Solve for x
    x = 18,455,574,509.10/156,871.46
  6. Step 6: Final answer
    x = 117,647.75

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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.