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Finding the Fourth Proportional to 118,798.79, 163,942.45 and 65,087.24

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Solution

The fourth proportional to 118,798.79, 163,942.45 and 65,087.24 is: 89,820.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,798.79 : 163,942.45 = 65,087.24 : x
  2. Step 2: Convert to fraction form
    118,798.79/163,942.45 = 65,087.24/x
  3. Step 3: Cross multiply
    118,798.79x = 163,942.45 × 65,087.24
  4. Step 4: Simplify right side
    118,798.79x = 10,670,560,606.91
  5. Step 5: Solve for x
    x = 10,670,560,606.91/118,798.79
  6. Step 6: Final answer
    x = 89,820.45

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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.