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Finding the Fourth Proportional to 187,978.08, 281,961.72 and 69,646.80

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Solution

The fourth proportional to 187,978.08, 281,961.72 and 69,646.80 is: 104,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,978.08 : 281,961.72 = 69,646.80 : x
  2. Step 2: Convert to fraction form
    187,978.08/281,961.72 = 69,646.80/x
  3. Step 3: Cross multiply
    187,978.08x = 281,961.72 × 69,646.80
  4. Step 4: Simplify right side
    187,978.08x = 19,637,731,520.50
  5. Step 5: Solve for x
    x = 19,637,731,520.50/187,978.08
  6. Step 6: Final answer
    x = 104,468.20

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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.