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Finding the Fourth Proportional to 108,164.55, 149,056.20 and 77,892.68

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Solution

The fourth proportional to 108,164.55, 149,056.20 and 77,892.68 is: 107,340.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,164.55 : 149,056.20 = 77,892.68 : x
  2. Step 2: Convert to fraction form
    108,164.55/149,056.20 = 77,892.68/x
  3. Step 3: Cross multiply
    108,164.55x = 149,056.20 × 77,892.68
  4. Step 4: Simplify right side
    108,164.55x = 11,610,386,143.34
  5. Step 5: Solve for x
    x = 11,610,386,143.34/108,164.55
  6. Step 6: Final answer
    x = 107,340.03

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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.