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Finding the Fourth Proportional to 118,871.30, 178,119.15 and 43,888.10

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Solution

The fourth proportional to 118,871.30, 178,119.15 and 43,888.10 is: 65,762.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,871.30 : 178,119.15 = 43,888.10 : x
  2. Step 2: Convert to fraction form
    118,871.30/178,119.15 = 43,888.10/x
  3. Step 3: Cross multiply
    118,871.30x = 178,119.15 × 43,888.10
  4. Step 4: Simplify right side
    118,871.30x = 7,817,311,067.12
  5. Step 5: Solve for x
    x = 7,817,311,067.12/118,871.30
  6. Step 6: Final answer
    x = 65,762.81

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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.