Home / 124,091.20-185,931.60-71,408.80

Finding the Fourth Proportional to 124,091.20, 185,931.60 and 71,408.80

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Solution

The fourth proportional to 124,091.20, 185,931.60 and 71,408.80 is: 106,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,091.20 : 185,931.60 = 71,408.80 : x
  2. Step 2: Convert to fraction form
    124,091.20/185,931.60 = 71,408.80/x
  3. Step 3: Cross multiply
    124,091.20x = 185,931.60 × 71,408.80
  4. Step 4: Simplify right side
    124,091.20x = 13,277,152,438.08
  5. Step 5: Solve for x
    x = 13,277,152,438.08/124,091.20
  6. Step 6: Final answer
    x = 106,995.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.