Home / 156,642.37-216,160.67-85,020.86

Finding the Fourth Proportional to 156,642.37, 216,160.67 and 85,020.86

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Solution

The fourth proportional to 156,642.37, 216,160.67 and 85,020.86 is: 117,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,642.37 : 216,160.67 = 85,020.86 : x
  2. Step 2: Convert to fraction form
    156,642.37/216,160.67 = 85,020.86/x
  3. Step 3: Cross multiply
    156,642.37x = 216,160.67 × 85,020.86
  4. Step 4: Simplify right side
    156,642.37x = 18,378,166,061.58
  5. Step 5: Solve for x
    x = 18,378,166,061.58/156,642.37
  6. Step 6: Final answer
    x = 117,325.64

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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.