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Finding the Fourth Proportional to 156,873.36, 216,468 and 88,885.20

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Solution

The fourth proportional to 156,873.36, 216,468 and 88,885.20 is: 122,651.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,873.36 : 216,468 = 88,885.20 : x
  2. Step 2: Convert to fraction form
    156,873.36/216,468 = 88,885.20/x
  3. Step 3: Cross multiply
    156,873.36x = 216,468 × 88,885.20
  4. Step 4: Simplify right side
    156,873.36x = 19,240,801,473.60
  5. Step 5: Solve for x
    x = 19,240,801,473.60/156,873.36
  6. Step 6: Final answer
    x = 122,651.81

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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.