Home / 106,414.40-159,427.20-86,585.60

Finding the Fourth Proportional to 106,414.40, 159,427.20 and 86,585.60

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Solution

The fourth proportional to 106,414.40, 159,427.20 and 86,585.60 is: 129,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,414.40 : 159,427.20 = 86,585.60 : x
  2. Step 2: Convert to fraction form
    106,414.40/159,427.20 = 86,585.60/x
  3. Step 3: Cross multiply
    106,414.40x = 159,427.20 × 86,585.60
  4. Step 4: Simplify right side
    106,414.40x = 13,804,099,768.32
  5. Step 5: Solve for x
    x = 13,804,099,768.32/106,414.40
  6. Step 6: Final answer
    x = 129,720.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.