Home / 189,731.50-261,833.22-103,695.80

Finding the Fourth Proportional to 189,731.50, 261,833.22 and 103,695.80

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Solution

The fourth proportional to 189,731.50, 261,833.22 and 103,695.80 is: 143,102.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,731.50 : 261,833.22 = 103,695.80 : x
  2. Step 2: Convert to fraction form
    189,731.50/261,833.22 = 103,695.80/x
  3. Step 3: Cross multiply
    189,731.50x = 261,833.22 × 103,695.80
  4. Step 4: Simplify right side
    189,731.50x = 27,151,005,214.48
  5. Step 5: Solve for x
    x = 27,151,005,214.48/189,731.50
  6. Step 6: Final answer
    x = 143,102.25

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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.