Home / 189,713.26-261,801.12-103,670.35

Finding the Fourth Proportional to 189,713.26, 261,801.12 and 103,670.35

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Solution

The fourth proportional to 189,713.26, 261,801.12 and 103,670.35 is: 143,063.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,713.26 : 261,801.12 = 103,670.35 : x
  2. Step 2: Convert to fraction form
    189,713.26/261,801.12 = 103,670.35/x
  3. Step 3: Cross multiply
    189,713.26x = 261,801.12 × 103,670.35
  4. Step 4: Simplify right side
    189,713.26x = 27,141,013,740.79
  5. Step 5: Solve for x
    x = 27,141,013,740.79/189,713.26
  6. Step 6: Final answer
    x = 143,063.35

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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.