Home / 156,723.16-216,272.37-85,101.70

Finding the Fourth Proportional to 156,723.16, 216,272.37 and 85,101.70

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Solution

The fourth proportional to 156,723.16, 216,272.37 and 85,101.70 is: 117,437.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,723.16 : 216,272.37 = 85,101.70 : x
  2. Step 2: Convert to fraction form
    156,723.16/216,272.37 = 85,101.70/x
  3. Step 3: Cross multiply
    156,723.16x = 216,272.37 × 85,101.70
  4. Step 4: Simplify right side
    156,723.16x = 18,405,146,350.03
  5. Step 5: Solve for x
    x = 18,405,146,350.03/156,723.16
  6. Step 6: Final answer
    x = 117,437.31

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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.