Home / 189,913.92-262,070.55-103,855.79

Finding the Fourth Proportional to 189,913.92, 262,070.55 and 103,855.79

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Solution

The fourth proportional to 189,913.92, 262,070.55 and 103,855.79 is: 143,315.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,913.92 : 262,070.55 = 103,855.79 : x
  2. Step 2: Convert to fraction form
    189,913.92/262,070.55 = 103,855.79/x
  3. Step 3: Cross multiply
    189,913.92x = 262,070.55 × 103,855.79
  4. Step 4: Simplify right side
    189,913.92x = 27,217,542,695.63
  5. Step 5: Solve for x
    x = 27,217,542,695.63/189,913.92
  6. Step 6: Final answer
    x = 143,315.15

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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.