Home / 124,255.03-171,417.80-78,286.77

Finding the Fourth Proportional to 124,255.03, 171,417.80 and 78,286.77

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Solution

The fourth proportional to 124,255.03, 171,417.80 and 78,286.77 is: 108,001.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,255.03 : 171,417.80 = 78,286.77 : x
  2. Step 2: Convert to fraction form
    124,255.03/171,417.80 = 78,286.77/x
  3. Step 3: Cross multiply
    124,255.03x = 171,417.80 × 78,286.77
  4. Step 4: Simplify right side
    124,255.03x = 13,419,745,155.75
  5. Step 5: Solve for x
    x = 13,419,745,155.75/124,255.03
  6. Step 6: Final answer
    x = 108,001.63

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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.