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Finding the Fourth Proportional to 145,296.78, 200,511.45 and 87,935.46

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Solution

The fourth proportional to 145,296.78, 200,511.45 and 87,935.46 is: 121,352.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,296.78 : 200,511.45 = 87,935.46 : x
  2. Step 2: Convert to fraction form
    145,296.78/200,511.45 = 87,935.46/x
  3. Step 3: Cross multiply
    145,296.78x = 200,511.45 × 87,935.46
  4. Step 4: Simplify right side
    145,296.78x = 17,632,066,591.02
  5. Step 5: Solve for x
    x = 17,632,066,591.02/145,296.78
  6. Step 6: Final answer
    x = 121,352.08

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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.