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Finding the Fourth Proportional to 158,265.53, 218,406.74 and 86,650.10

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Solution

The fourth proportional to 158,265.53, 218,406.74 and 86,650.10 is: 119,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,265.53 : 218,406.74 = 86,650.10 : x
  2. Step 2: Convert to fraction form
    158,265.53/218,406.74 = 86,650.10/x
  3. Step 3: Cross multiply
    158,265.53x = 218,406.74 × 86,650.10
  4. Step 4: Simplify right side
    158,265.53x = 18,924,964,336.39
  5. Step 5: Solve for x
    x = 18,924,964,336.39/158,265.53
  6. Step 6: Final answer
    x = 119,577.30

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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.