Home / 103,710.10-155,176.35-68,718.10

Finding the Fourth Proportional to 103,710.10, 155,176.35 and 68,718.10

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Solution

The fourth proportional to 103,710.10, 155,176.35 and 68,718.10 is: 102,819.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,710.10 : 155,176.35 = 68,718.10 : x
  2. Step 2: Convert to fraction form
    103,710.10/155,176.35 = 68,718.10/x
  3. Step 3: Cross multiply
    103,710.10x = 155,176.35 × 68,718.10
  4. Step 4: Simplify right side
    103,710.10x = 10,663,423,936.94
  5. Step 5: Solve for x
    x = 10,663,423,936.94/103,710.10
  6. Step 6: Final answer
    x = 102,819.53

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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.