Home / 103,700.10-155,161.35-68,708.10

Finding the Fourth Proportional to 103,700.10, 155,161.35 and 68,708.10

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Solution

The fourth proportional to 103,700.10, 155,161.35 and 68,708.10 is: 102,804.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,700.10 : 155,161.35 = 68,708.10 : x
  2. Step 2: Convert to fraction form
    103,700.10/155,161.35 = 68,708.10/x
  3. Step 3: Cross multiply
    103,700.10x = 155,161.35 × 68,708.10
  4. Step 4: Simplify right side
    103,700.10x = 10,660,841,551.94
  5. Step 5: Solve for x
    x = 10,660,841,551.94/103,700.10
  6. Step 6: Final answer
    x = 102,804.54

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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.