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Finding the Fourth Proportional to 156,768.75, 216,343.20 and 88,784.03

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Solution

The fourth proportional to 156,768.75, 216,343.20 and 88,784.03 is: 122,523.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,768.75 : 216,343.20 = 88,784.03 : x
  2. Step 2: Convert to fraction form
    156,768.75/216,343.20 = 88,784.03/x
  3. Step 3: Cross multiply
    156,768.75x = 216,343.20 × 88,784.03
  4. Step 4: Simplify right side
    156,768.75x = 19,207,821,159.10
  5. Step 5: Solve for x
    x = 19,207,821,159.10/156,768.75
  6. Step 6: Final answer
    x = 122,523.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.