Home / 189,715.26-261,803.88-103,672.35

Finding the Fourth Proportional to 189,715.26, 261,803.88 and 103,672.35

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Solution

The fourth proportional to 189,715.26, 261,803.88 and 103,672.35 is: 143,066.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,715.26 : 261,803.88 = 103,672.35 : x
  2. Step 2: Convert to fraction form
    189,715.26/261,803.88 = 103,672.35/x
  3. Step 3: Cross multiply
    189,715.26x = 261,803.88 × 103,672.35
  4. Step 4: Simplify right side
    189,715.26x = 27,141,823,478.72
  5. Step 5: Solve for x
    x = 27,141,823,478.72/189,715.26
  6. Step 6: Final answer
    x = 143,066.11

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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.