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Finding the Fourth Proportional to 150,662.08, 207,913.64 and 86,132.72

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Solution

The fourth proportional to 150,662.08, 207,913.64 and 86,132.72 is: 118,863.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,662.08 : 207,913.64 = 86,132.72 : x
  2. Step 2: Convert to fraction form
    150,662.08/207,913.64 = 86,132.72/x
  3. Step 3: Cross multiply
    150,662.08x = 207,913.64 × 86,132.72
  4. Step 4: Simplify right side
    150,662.08x = 17,908,167,338.30
  5. Step 5: Solve for x
    x = 17,908,167,338.30/150,662.08
  6. Step 6: Final answer
    x = 118,863.14

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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.