Home / 80,931.34-121,408.08-76,010.59

Finding the Fourth Proportional to 80,931.34, 121,408.08 and 76,010.59

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Solution

The fourth proportional to 80,931.34, 121,408.08 and 76,010.59 is: 114,026.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,931.34 : 121,408.08 = 76,010.59 : x
  2. Step 2: Convert to fraction form
    80,931.34/121,408.08 = 76,010.59/x
  3. Step 3: Cross multiply
    80,931.34x = 121,408.08 × 76,010.59
  4. Step 4: Simplify right side
    80,931.34x = 9,228,299,791.57
  5. Step 5: Solve for x
    x = 9,228,299,791.57/80,931.34
  6. Step 6: Final answer
    x = 114,026.28

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1.5x scale

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.