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Finding the Fourth Proportional to 79,114.40, 118,671.60 and 75,615.20

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Solution

The fourth proportional to 79,114.40, 118,671.60 and 75,615.20 is: 113,422.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,114.40 : 118,671.60 = 75,615.20 : x
  2. Step 2: Convert to fraction form
    79,114.40/118,671.60 = 75,615.20/x
  3. Step 3: Cross multiply
    79,114.40x = 118,671.60 × 75,615.20
  4. Step 4: Simplify right side
    79,114.40x = 8,973,376,768.32
  5. Step 5: Solve for x
    x = 8,973,376,768.32/79,114.40
  6. Step 6: Final answer
    x = 113,422.80

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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.