Home / 80,256.17-120,384.86-21,091.74

Finding the Fourth Proportional to 80,256.17, 120,384.86 and 21,091.74

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Solution

The fourth proportional to 80,256.17, 120,384.86 and 21,091.74 is: 31,637.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256.17 : 120,384.86 = 21,091.74 : x
  2. Step 2: Convert to fraction form
    80,256.17/120,384.86 = 21,091.74/x
  3. Step 3: Cross multiply
    80,256.17x = 120,384.86 × 21,091.74
  4. Step 4: Simplify right side
    80,256.17x = 2,539,126,167.06
  5. Step 5: Solve for x
    x = 2,539,126,167.06/80,256.17
  6. Step 6: Final answer
    x = 31,637.77

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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.