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Finding the Fourth Proportional to 159,109.80, 238,659.30 and 40,782.30

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Solution

The fourth proportional to 159,109.80, 238,659.30 and 40,782.30 is: 61,172.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,109.80 : 238,659.30 = 40,782.30 : x
  2. Step 2: Convert to fraction form
    159,109.80/238,659.30 = 40,782.30/x
  3. Step 3: Cross multiply
    159,109.80x = 238,659.30 × 40,782.30
  4. Step 4: Simplify right side
    159,109.80x = 9,733,075,170.39
  5. Step 5: Solve for x
    x = 9,733,075,170.39/159,109.80
  6. Step 6: Final answer
    x = 61,172.07

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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.