Home / 156,723.12-216,271.94-85,101.56

Finding the Fourth Proportional to 156,723.12, 216,271.94 and 85,101.56

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Solution

The fourth proportional to 156,723.12, 216,271.94 and 85,101.56 is: 117,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,723.12 : 216,271.94 = 85,101.56 : x
  2. Step 2: Convert to fraction form
    156,723.12/216,271.94 = 85,101.56/x
  3. Step 3: Cross multiply
    156,723.12x = 216,271.94 × 85,101.56
  4. Step 4: Simplify right side
    156,723.12x = 18,405,079,478.23
  5. Step 5: Solve for x
    x = 18,405,079,478.23/156,723.12
  6. Step 6: Final answer
    x = 117,436.91

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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.