Home / 189,140.20-261,012.12-104,257.12

Finding the Fourth Proportional to 189,140.20, 261,012.12 and 104,257.12

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Solution

The fourth proportional to 189,140.20, 261,012.12 and 104,257.12 is: 143,874.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,140.20 : 261,012.12 = 104,257.12 : x
  2. Step 2: Convert to fraction form
    189,140.20/261,012.12 = 104,257.12/x
  3. Step 3: Cross multiply
    189,140.20x = 261,012.12 × 104,257.12
  4. Step 4: Simplify right side
    189,140.20x = 27,212,371,916.29
  5. Step 5: Solve for x
    x = 27,212,371,916.29/189,140.20
  6. Step 6: Final answer
    x = 143,874.08

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1.5x scale

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.