Home / 117,375.40-161,868.90-78,544.36

Finding the Fourth Proportional to 117,375.40, 161,868.90 and 78,544.36

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Solution

The fourth proportional to 117,375.40, 161,868.90 and 78,544.36 is: 108,318.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,375.40 : 161,868.90 = 78,544.36 : x
  2. Step 2: Convert to fraction form
    117,375.40/161,868.90 = 78,544.36/x
  3. Step 3: Cross multiply
    117,375.40x = 161,868.90 × 78,544.36
  4. Step 4: Simplify right side
    117,375.40x = 12,713,889,154.40
  5. Step 5: Solve for x
    x = 12,713,889,154.40/117,375.40
  6. Step 6: Final answer
    x = 108,318.18

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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.