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Finding the Fourth Proportional to 108,165.55, 149,057.58 and 77,893.68

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Solution

The fourth proportional to 108,165.55, 149,057.58 and 77,893.68 is: 107,341.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,165.55 : 149,057.58 = 77,893.68 : x
  2. Step 2: Convert to fraction form
    108,165.55/149,057.58 = 77,893.68/x
  3. Step 3: Cross multiply
    108,165.55x = 149,057.58 × 77,893.68
  4. Step 4: Simplify right side
    108,165.55x = 11,610,643,438.09
  5. Step 5: Solve for x
    x = 11,610,643,438.09/108,165.55
  6. Step 6: Final answer
    x = 107,341.42

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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.