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Finding the Fourth Proportional to 117,087.72, 161,604.90 and 79,374.12

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Solution

The fourth proportional to 117,087.72, 161,604.90 and 79,374.12 is: 109,552.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,087.72 : 161,604.90 = 79,374.12 : x
  2. Step 2: Convert to fraction form
    117,087.72/161,604.90 = 79,374.12/x
  3. Step 3: Cross multiply
    117,087.72x = 161,604.90 × 79,374.12
  4. Step 4: Simplify right side
    117,087.72x = 12,827,246,725.19
  5. Step 5: Solve for x
    x = 12,827,246,725.19/117,087.72
  6. Step 6: Final answer
    x = 109,552.45

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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.