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Finding the Fourth Proportional to 156,988.71, 216,662.70 and 88,097.15

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Solution

The fourth proportional to 156,988.71, 216,662.70 and 88,097.15 is: 121,584.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988.71 : 216,662.70 = 88,097.15 : x
  2. Step 2: Convert to fraction form
    156,988.71/216,662.70 = 88,097.15/x
  3. Step 3: Cross multiply
    156,988.71x = 216,662.70 × 88,097.15
  4. Step 4: Simplify right side
    156,988.71x = 19,087,365,297.99
  5. Step 5: Solve for x
    x = 19,087,365,297.99/156,988.71
  6. Step 6: Final answer
    x = 121,584.32

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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.