Home / 189,412.10-261,390.19-103,371.76

Finding the Fourth Proportional to 189,412.10, 261,390.19 and 103,371.76

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Solution

The fourth proportional to 189,412.10, 261,390.19 and 103,371.76 is: 142,653.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,412.10 : 261,390.19 = 103,371.76 : x
  2. Step 2: Convert to fraction form
    189,412.10/261,390.19 = 103,371.76/x
  3. Step 3: Cross multiply
    189,412.10x = 261,390.19 × 103,371.76
  4. Step 4: Simplify right side
    189,412.10x = 27,020,362,680.08
  5. Step 5: Solve for x
    x = 27,020,362,680.08/189,412.10
  6. Step 6: Final answer
    x = 142,653.84

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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.