Home / 124,439.88-171,672.39-84,139.05

Finding the Fourth Proportional to 124,439.88, 171,672.39 and 84,139.05

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Solution

The fourth proportional to 124,439.88, 171,672.39 and 84,139.05 is: 116,074.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,439.88 : 171,672.39 = 84,139.05 : x
  2. Step 2: Convert to fraction form
    124,439.88/171,672.39 = 84,139.05/x
  3. Step 3: Cross multiply
    124,439.88x = 171,672.39 × 84,139.05
  4. Step 4: Simplify right side
    124,439.88x = 14,444,351,805.83
  5. Step 5: Solve for x
    x = 14,444,351,805.83/124,439.88
  6. Step 6: Final answer
    x = 116,074.94

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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.