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Finding the Fourth Proportional to 118,700.13, 163,801.25 and 64,983.81

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Solution

The fourth proportional to 118,700.13, 163,801.25 and 64,983.81 is: 89,674.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,700.13 : 163,801.25 = 64,983.81 : x
  2. Step 2: Convert to fraction form
    118,700.13/163,801.25 = 64,983.81/x
  3. Step 3: Cross multiply
    118,700.13x = 163,801.25 × 64,983.81
  4. Step 4: Simplify right side
    118,700.13x = 10,644,428,982.84
  5. Step 5: Solve for x
    x = 10,644,428,982.84/118,700.13
  6. Step 6: Final answer
    x = 89,674.96

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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.