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Finding the Fourth Proportional to 189,041.61, 260,867.88 and 104,156.85

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Solution

The fourth proportional to 189,041.61, 260,867.88 and 104,156.85 is: 143,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,041.61 : 260,867.88 = 104,156.85 : x
  2. Step 2: Convert to fraction form
    189,041.61/260,867.88 = 104,156.85/x
  3. Step 3: Cross multiply
    189,041.61x = 260,867.88 × 104,156.85
  4. Step 4: Simplify right side
    189,041.61x = 27,171,176,646.98
  5. Step 5: Solve for x
    x = 27,171,176,646.98/189,041.61
  6. Step 6: Final answer
    x = 143,731.20

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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.