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Finding the Fourth Proportional to 117,331.12, 161,913.90 and 67,030.12

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Solution

The fourth proportional to 117,331.12, 161,913.90 and 67,030.12 is: 92,499.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,331.12 : 161,913.90 = 67,030.12 : x
  2. Step 2: Convert to fraction form
    117,331.12/161,913.90 = 67,030.12/x
  3. Step 3: Cross multiply
    117,331.12x = 161,913.90 × 67,030.12
  4. Step 4: Simplify right side
    117,331.12x = 10,853,108,146.67
  5. Step 5: Solve for x
    x = 10,853,108,146.67/117,331.12
  6. Step 6: Final answer
    x = 92,499.83

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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.