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Finding the Fourth Proportional to 118,358.94, 163,332.81 and 64,644.17

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Solution

The fourth proportional to 118,358.94, 163,332.81 and 64,644.17 is: 89,207.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,358.94 : 163,332.81 = 64,644.17 : x
  2. Step 2: Convert to fraction form
    118,358.94/163,332.81 = 64,644.17/x
  3. Step 3: Cross multiply
    118,358.94x = 163,332.81 × 64,644.17
  4. Step 4: Simplify right side
    118,358.94x = 10,558,513,936.22
  5. Step 5: Solve for x
    x = 10,558,513,936.22/118,358.94
  6. Step 6: Final answer
    x = 89,207.57

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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.