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Finding the Fourth Proportional to 118,086.40, 162,955.20 and 64,370.56

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Solution

The fourth proportional to 118,086.40, 162,955.20 and 64,370.56 is: 88,829.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,086.40 : 162,955.20 = 64,370.56 : x
  2. Step 2: Convert to fraction form
    118,086.40/162,955.20 = 64,370.56/x
  3. Step 3: Cross multiply
    118,086.40x = 162,955.20 × 64,370.56
  4. Step 4: Simplify right side
    118,086.40x = 10,489,517,478.91
  5. Step 5: Solve for x
    x = 10,489,517,478.91/118,086.40
  6. Step 6: Final answer
    x = 88,829.17

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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.