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Finding the Fourth Proportional to 117,858.40, 176,528.40 and 115,266.40

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Solution

The fourth proportional to 117,858.40, 176,528.40 and 115,266.40 is: 172,646.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,858.40 : 176,528.40 = 115,266.40 : x
  2. Step 2: Convert to fraction form
    117,858.40/176,528.40 = 115,266.40/x
  3. Step 3: Cross multiply
    117,858.40x = 176,528.40 × 115,266.40
  4. Step 4: Simplify right side
    117,858.40x = 20,347,793,165.76
  5. Step 5: Solve for x
    x = 20,347,793,165.76/117,858.40
  6. Step 6: Final answer
    x = 172,646.10

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