Home / 117,251.40-161,880.30-90,342.84

Finding the Fourth Proportional to 117,251.40, 161,880.30 and 90,342.84

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Solution

The fourth proportional to 117,251.40, 161,880.30 and 90,342.84 is: 124,729.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,251.40 : 161,880.30 = 90,342.84 : x
  2. Step 2: Convert to fraction form
    117,251.40/161,880.30 = 90,342.84/x
  3. Step 3: Cross multiply
    117,251.40x = 161,880.30 × 90,342.84
  4. Step 4: Simplify right side
    117,251.40x = 14,624,726,042.05
  5. Step 5: Solve for x
    x = 14,624,726,042.05/117,251.40
  6. Step 6: Final answer
    x = 124,729.65

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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.