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Finding the Fourth Proportional to 118,889.64, 164,066.98 and 65,176.92

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Solution

The fourth proportional to 118,889.64, 164,066.98 and 65,176.92 is: 89,943.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,889.64 : 164,066.98 = 65,176.92 : x
  2. Step 2: Convert to fraction form
    118,889.64/164,066.98 = 65,176.92/x
  3. Step 3: Cross multiply
    118,889.64x = 164,066.98 × 65,176.92
  4. Step 4: Simplify right side
    118,889.64x = 10,693,380,430.10
  5. Step 5: Solve for x
    x = 10,693,380,430.10/118,889.64
  6. Step 6: Final answer
    x = 89,943.75

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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.