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Finding the Fourth Proportional to 103,014.70, 155,224.01 and 84,704.91

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Solution

The fourth proportional to 103,014.70, 155,224.01 and 84,704.91 is: 127,634.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,014.70 : 155,224.01 = 84,704.91 : x
  2. Step 2: Convert to fraction form
    103,014.70/155,224.01 = 84,704.91/x
  3. Step 3: Cross multiply
    103,014.70x = 155,224.01 × 84,704.91
  4. Step 4: Simplify right side
    103,014.70x = 13,148,235,426.56
  5. Step 5: Solve for x
    x = 13,148,235,426.56/103,014.70
  6. Step 6: Final answer
    x = 127,634.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.