Home / 103,740.10-155,221.35-68,748.10

Finding the Fourth Proportional to 103,740.10, 155,221.35 and 68,748.10

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Solution

The fourth proportional to 103,740.10, 155,221.35 and 68,748.10 is: 102,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,740.10 : 155,221.35 = 68,748.10 : x
  2. Step 2: Convert to fraction form
    103,740.10/155,221.35 = 68,748.10/x
  3. Step 3: Cross multiply
    103,740.10x = 155,221.35 × 68,748.10
  4. Step 4: Simplify right side
    103,740.10x = 10,671,172,891.94
  5. Step 5: Solve for x
    x = 10,671,172,891.94/103,740.10
  6. Step 6: Final answer
    x = 102,864.49

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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.