Home / 156,634.11-216,152.64-85,013.52

Finding the Fourth Proportional to 156,634.11, 216,152.64 and 85,013.52

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Solution

The fourth proportional to 156,634.11, 216,152.64 and 85,013.52 is: 117,317.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,634.11 : 216,152.64 = 85,013.52 : x
  2. Step 2: Convert to fraction form
    156,634.11/216,152.64 = 85,013.52/x
  3. Step 3: Cross multiply
    156,634.11x = 216,152.64 × 85,013.52
  4. Step 4: Simplify right side
    156,634.11x = 18,375,896,783.69
  5. Step 5: Solve for x
    x = 18,375,896,783.69/156,634.11
  6. Step 6: Final answer
    x = 117,317.34

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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.