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Finding the Fourth Proportional to 189,352.80, 284,138.55 and 71,036.10

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Solution

The fourth proportional to 189,352.80, 284,138.55 and 71,036.10 is: 106,595.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,352.80 : 284,138.55 = 71,036.10 : x
  2. Step 2: Convert to fraction form
    189,352.80/284,138.55 = 71,036.10/x
  3. Step 3: Cross multiply
    189,352.80x = 284,138.55 × 71,036.10
  4. Step 4: Simplify right side
    189,352.80x = 20,184,094,451.66
  5. Step 5: Solve for x
    x = 20,184,094,451.66/189,352.80
  6. Step 6: Final answer
    x = 106,595.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.