Home / 103,972.19-143,520.50-80,956.51

Finding the Fourth Proportional to 103,972.19, 143,520.50 and 80,956.51

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Solution

The fourth proportional to 103,972.19, 143,520.50 and 80,956.51 is: 111,750.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,972.19 : 143,520.50 = 80,956.51 : x
  2. Step 2: Convert to fraction form
    103,972.19/143,520.50 = 80,956.51/x
  3. Step 3: Cross multiply
    103,972.19x = 143,520.50 × 80,956.51
  4. Step 4: Simplify right side
    103,972.19x = 11,618,918,637.05
  5. Step 5: Solve for x
    x = 11,618,918,637.05/103,972.19
  6. Step 6: Final answer
    x = 111,750.26

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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.