Home / 189,680.55-261,756.08-103,637.69

Finding the Fourth Proportional to 189,680.55, 261,756.08 and 103,637.69

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Solution

The fourth proportional to 189,680.55, 261,756.08 and 103,637.69 is: 143,018.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,680.55 : 261,756.08 = 103,637.69 : x
  2. Step 2: Convert to fraction form
    189,680.55/261,756.08 = 103,637.69/x
  3. Step 3: Cross multiply
    189,680.55x = 261,756.08 × 103,637.69
  4. Step 4: Simplify right side
    189,680.55x = 27,127,795,474.66
  5. Step 5: Solve for x
    x = 27,127,795,474.66/189,680.55
  6. Step 6: Final answer
    x = 143,018.33

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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.