Home / 189,742.19-261,849.65-103,705.97

Finding the Fourth Proportional to 189,742.19, 261,849.65 and 103,705.97

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Solution

The fourth proportional to 189,742.19, 261,849.65 and 103,705.97 is: 143,117.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,742.19 : 261,849.65 = 103,705.97 : x
  2. Step 2: Convert to fraction form
    189,742.19/261,849.65 = 103,705.97/x
  3. Step 3: Cross multiply
    189,742.19x = 261,849.65 × 103,705.97
  4. Step 4: Simplify right side
    189,742.19x = 27,155,370,119.63
  5. Step 5: Solve for x
    x = 27,155,370,119.63/189,742.19
  6. Step 6: Final answer
    x = 143,117.20

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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.