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Finding the Fourth Proportional to 189,052.82, 260,891.40 and 103,011.50

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Solution

The fourth proportional to 189,052.82, 260,891.40 and 103,011.50 is: 142,155.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,052.82 : 260,891.40 = 103,011.50 : x
  2. Step 2: Convert to fraction form
    189,052.82/260,891.40 = 103,011.50/x
  3. Step 3: Cross multiply
    189,052.82x = 260,891.40 × 103,011.50
  4. Step 4: Simplify right side
    189,052.82x = 26,874,814,451.10
  5. Step 5: Solve for x
    x = 26,874,814,451.10/189,052.82
  6. Step 6: Final answer
    x = 142,155.06

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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.