Home / 156,691.54-216,235.44-85,071.57

Finding the Fourth Proportional to 156,691.54, 216,235.44 and 85,071.57

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Solution

The fourth proportional to 156,691.54, 216,235.44 and 85,071.57 is: 117,399.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,691.54 : 216,235.44 = 85,071.57 : x
  2. Step 2: Convert to fraction form
    156,691.54/216,235.44 = 85,071.57/x
  3. Step 3: Cross multiply
    156,691.54x = 216,235.44 × 85,071.57
  4. Step 4: Simplify right side
    156,691.54x = 18,395,487,469.83
  5. Step 5: Solve for x
    x = 18,395,487,469.83/156,691.54
  6. Step 6: Final answer
    x = 117,399.36

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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.