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Finding the Fourth Proportional to 118,397.01, 163,399.13 and 64,690.09

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Solution

The fourth proportional to 118,397.01, 163,399.13 and 64,690.09 is: 89,278.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,397.01 : 163,399.13 = 64,690.09 : x
  2. Step 2: Convert to fraction form
    118,397.01/163,399.13 = 64,690.09/x
  3. Step 3: Cross multiply
    118,397.01x = 163,399.13 × 64,690.09
  4. Step 4: Simplify right side
    118,397.01x = 10,570,304,425.62
  5. Step 5: Solve for x
    x = 10,570,304,425.62/118,397.01
  6. Step 6: Final answer
    x = 89,278.47

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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.