Home / 189,144.11-261,015.28-103,103.89

Finding the Fourth Proportional to 189,144.11, 261,015.28 and 103,103.89

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Solution

The fourth proportional to 189,144.11, 261,015.28 and 103,103.89 is: 142,281.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,144.11 : 261,015.28 = 103,103.89 : x
  2. Step 2: Convert to fraction form
    189,144.11/261,015.28 = 103,103.89/x
  3. Step 3: Cross multiply
    189,144.11x = 261,015.28 × 103,103.89
  4. Step 4: Simplify right side
    189,144.11x = 26,911,689,807.14
  5. Step 5: Solve for x
    x = 26,911,689,807.14/189,144.11
  6. Step 6: Final answer
    x = 142,281.40

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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.