Home / 189,248.21-261,153.74-108,618.98

Finding the Fourth Proportional to 189,248.21, 261,153.74 and 108,618.98

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Solution

The fourth proportional to 189,248.21, 261,153.74 and 108,618.98 is: 149,889.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,248.21 : 261,153.74 = 108,618.98 : x
  2. Step 2: Convert to fraction form
    189,248.21/261,153.74 = 108,618.98/x
  3. Step 3: Cross multiply
    189,248.21x = 261,153.74 × 108,618.98
  4. Step 4: Simplify right side
    189,248.21x = 28,366,252,318.89
  5. Step 5: Solve for x
    x = 28,366,252,318.89/189,248.21
  6. Step 6: Final answer
    x = 149,889.15

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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.