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Finding the Fourth Proportional to 118,812.72, 163,961.44 and 65,101.08

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Solution

The fourth proportional to 118,812.72, 163,961.44 and 65,101.08 is: 89,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,812.72 : 163,961.44 = 65,101.08 : x
  2. Step 2: Convert to fraction form
    118,812.72/163,961.44 = 65,101.08/x
  3. Step 3: Cross multiply
    118,812.72x = 163,961.44 × 65,101.08
  4. Step 4: Simplify right side
    118,812.72x = 10,674,066,822.36
  5. Step 5: Solve for x
    x = 10,674,066,822.36/118,812.72
  6. Step 6: Final answer
    x = 89,839.43

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1.5x scale

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.