Home / 80,894.48-121,341.72-80,777.66

Finding the Fourth Proportional to 80,894.48, 121,341.72 and 80,777.66

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Solution

The fourth proportional to 80,894.48, 121,341.72 and 80,777.66 is: 121,166.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,894.48 : 121,341.72 = 80,777.66 : x
  2. Step 2: Convert to fraction form
    80,894.48/121,341.72 = 80,777.66/x
  3. Step 3: Cross multiply
    80,894.48x = 121,341.72 × 80,777.66
  4. Step 4: Simplify right side
    80,894.48x = 9,801,700,201.98
  5. Step 5: Solve for x
    x = 9,801,700,201.98/80,894.48
  6. Step 6: Final answer
    x = 121,166.49

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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.