Home / 103,629.64-155,444.45-68,561.09

Finding the Fourth Proportional to 103,629.64, 155,444.45 and 68,561.09

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Solution

The fourth proportional to 103,629.64, 155,444.45 and 68,561.09 is: 102,841.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,629.64 : 155,444.45 = 68,561.09 : x
  2. Step 2: Convert to fraction form
    103,629.64/155,444.45 = 68,561.09/x
  3. Step 3: Cross multiply
    103,629.64x = 155,444.45 × 68,561.09
  4. Step 4: Simplify right side
    103,629.64x = 10,657,440,926.45
  5. Step 5: Solve for x
    x = 10,657,440,926.45/103,629.64
  6. Step 6: Final answer
    x = 102,841.63

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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.