Home / 156,942.20-216,559.02-100,313.40

Finding the Fourth Proportional to 156,942.20, 216,559.02 and 100,313.40

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Solution

The fourth proportional to 156,942.20, 216,559.02 and 100,313.40 is: 138,418.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,942.20 : 216,559.02 = 100,313.40 : x
  2. Step 2: Convert to fraction form
    156,942.20/216,559.02 = 100,313.40/x
  3. Step 3: Cross multiply
    156,942.20x = 216,559.02 × 100,313.40
  4. Step 4: Simplify right side
    156,942.20x = 21,723,771,596.87
  5. Step 5: Solve for x
    x = 21,723,771,596.87/156,942.20
  6. Step 6: Final answer
    x = 138,418.93

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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.