Home / 124,158.94-171,287.08-78,137.05

Finding the Fourth Proportional to 124,158.94, 171,287.08 and 78,137.05

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Solution

The fourth proportional to 124,158.94, 171,287.08 and 78,137.05 is: 107,796.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,158.94 : 171,287.08 = 78,137.05 : x
  2. Step 2: Convert to fraction form
    124,158.94/171,287.08 = 78,137.05/x
  3. Step 3: Cross multiply
    124,158.94x = 171,287.08 × 78,137.05
  4. Step 4: Simplify right side
    124,158.94x = 13,383,867,134.31
  5. Step 5: Solve for x
    x = 13,383,867,134.31/124,158.94
  6. Step 6: Final answer
    x = 107,796.24

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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.