Home / 124,187.58-171,286.45-78,826.16

Finding the Fourth Proportional to 124,187.58, 171,286.45 and 78,826.16

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Solution

The fourth proportional to 124,187.58, 171,286.45 and 78,826.16 is: 108,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,187.58 : 171,286.45 = 78,826.16 : x
  2. Step 2: Convert to fraction form
    124,187.58/171,286.45 = 78,826.16/x
  3. Step 3: Cross multiply
    124,187.58x = 171,286.45 × 78,826.16
  4. Step 4: Simplify right side
    124,187.58x = 13,501,853,344.68
  5. Step 5: Solve for x
    x = 13,501,853,344.68/124,187.58
  6. Step 6: Final answer
    x = 108,721.45

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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.