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Finding the Fourth Proportional to 108,900, 150,307.92 and 66,494.34

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Solution

The fourth proportional to 108,900, 150,307.92 and 66,494.34 is: 91,778.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,900 : 150,307.92 = 66,494.34 : x
  2. Step 2: Convert to fraction form
    108,900/150,307.92 = 66,494.34/x
  3. Step 3: Cross multiply
    108,900x = 150,307.92 × 66,494.34
  4. Step 4: Simplify right side
    108,900x = 9,994,625,937.17
  5. Step 5: Solve for x
    x = 9,994,625,937.17/108,900
  6. Step 6: Final answer
    x = 91,778.02

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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.