Home / 117,145.94-161,585.97-90,240.98

Finding the Fourth Proportional to 117,145.94, 161,585.97 and 90,240.98

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Solution

The fourth proportional to 117,145.94, 161,585.97 and 90,240.98 is: 124,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,145.94 : 161,585.97 = 90,240.98 : x
  2. Step 2: Convert to fraction form
    117,145.94/161,585.97 = 90,240.98/x
  3. Step 3: Cross multiply
    117,145.94x = 161,585.97 × 90,240.98
  4. Step 4: Simplify right side
    117,145.94x = 14,581,676,287.05
  5. Step 5: Solve for x
    x = 14,581,676,287.05/117,145.94
  6. Step 6: Final answer
    x = 124,474.45

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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.