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Finding the Fourth Proportional to 117,891.60, 176,837.40 and 104,989.20

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Solution

The fourth proportional to 117,891.60, 176,837.40 and 104,989.20 is: 157,483.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,891.60 : 176,837.40 = 104,989.20 : x
  2. Step 2: Convert to fraction form
    117,891.60/176,837.40 = 104,989.20/x
  3. Step 3: Cross multiply
    117,891.60x = 176,837.40 × 104,989.20
  4. Step 4: Simplify right side
    117,891.60x = 18,566,017,156.08
  5. Step 5: Solve for x
    x = 18,566,017,156.08/117,891.60
  6. Step 6: Final answer
    x = 157,483.80

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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.