Home / 124,571.18-171,855.87-86,867.30

Finding the Fourth Proportional to 124,571.18, 171,855.87 and 86,867.30

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Solution

The fourth proportional to 124,571.18, 171,855.87 and 86,867.30 is: 119,840.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,571.18 : 171,855.87 = 86,867.30 : x
  2. Step 2: Convert to fraction form
    124,571.18/171,855.87 = 86,867.30/x
  3. Step 3: Cross multiply
    124,571.18x = 171,855.87 × 86,867.30
  4. Step 4: Simplify right side
    124,571.18x = 14,928,655,416.05
  5. Step 5: Solve for x
    x = 14,928,655,416.05/124,571.18
  6. Step 6: Final answer
    x = 119,840.36

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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.