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Finding the Fourth Proportional to 118,967.86, 178,468.29 and 40,104.64

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Solution

The fourth proportional to 118,967.86, 178,468.29 and 40,104.64 is: 60,162.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,967.86 : 178,468.29 = 40,104.64 : x
  2. Step 2: Convert to fraction form
    118,967.86/178,468.29 = 40,104.64/x
  3. Step 3: Cross multiply
    118,967.86x = 178,468.29 × 40,104.64
  4. Step 4: Simplify right side
    118,967.86x = 7,157,406,521.87
  5. Step 5: Solve for x
    x = 7,157,406,521.87/118,967.86
  6. Step 6: Final answer
    x = 60,162.52

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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.