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Finding the Fourth Proportional to 100,066.60, 138,068.58 and 68,301.64

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Solution

The fourth proportional to 100,066.60, 138,068.58 and 68,301.64 is: 94,240.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,066.60 : 138,068.58 = 68,301.64 : x
  2. Step 2: Convert to fraction form
    100,066.60/138,068.58 = 68,301.64/x
  3. Step 3: Cross multiply
    100,066.60x = 138,068.58 × 68,301.64
  4. Step 4: Simplify right side
    100,066.60x = 9,430,310,446.47
  5. Step 5: Solve for x
    x = 9,430,310,446.47/100,066.60
  6. Step 6: Final answer
    x = 94,240.34

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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.