Home / 103,515.77-155,275.18-68,203.22

Finding the Fourth Proportional to 103,515.77, 155,275.18 and 68,203.22

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Solution

The fourth proportional to 103,515.77, 155,275.18 and 68,203.22 is: 102,305.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,515.77 : 155,275.18 = 68,203.22 : x
  2. Step 2: Convert to fraction form
    103,515.77/155,275.18 = 68,203.22/x
  3. Step 3: Cross multiply
    103,515.77x = 155,275.18 × 68,203.22
  4. Step 4: Simplify right side
    103,515.77x = 10,590,266,315.20
  5. Step 5: Solve for x
    x = 10,590,266,315.20/103,515.77
  6. Step 6: Final answer
    x = 102,305.82

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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.