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Finding the Fourth Proportional to 110,781.95, 153,006.57 and 80,701.79

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Solution

The fourth proportional to 110,781.95, 153,006.57 and 80,701.79 is: 111,461.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,781.95 : 153,006.57 = 80,701.79 : x
  2. Step 2: Convert to fraction form
    110,781.95/153,006.57 = 80,701.79/x
  3. Step 3: Cross multiply
    110,781.95x = 153,006.57 × 80,701.79
  4. Step 4: Simplify right side
    110,781.95x = 12,347,903,315.73
  5. Step 5: Solve for x
    x = 12,347,903,315.73/110,781.95
  6. Step 6: Final answer
    x = 111,461.33

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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.