Home / 203,685.12-305,531.10-70,569.30

Finding the Fourth Proportional to 203,685.12, 305,531.10 and 70,569.30

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Solution

The fourth proportional to 203,685.12, 305,531.10 and 70,569.30 is: 105,855.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,685.12 : 305,531.10 = 70,569.30 : x
  2. Step 2: Convert to fraction form
    203,685.12/305,531.10 = 70,569.30/x
  3. Step 3: Cross multiply
    203,685.12x = 305,531.10 × 70,569.30
  4. Step 4: Simplify right side
    203,685.12x = 21,561,115,855.23
  5. Step 5: Solve for x
    x = 21,561,115,855.23/203,685.12
  6. Step 6: Final answer
    x = 105,855.13

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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.