Home / 103,148.86-154,460.70-67,981.90

Finding the Fourth Proportional to 103,148.86, 154,460.70 and 67,981.90

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Solution

The fourth proportional to 103,148.86, 154,460.70 and 67,981.90 is: 101,799.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,148.86 : 154,460.70 = 67,981.90 : x
  2. Step 2: Convert to fraction form
    103,148.86/154,460.70 = 67,981.90/x
  3. Step 3: Cross multiply
    103,148.86x = 154,460.70 × 67,981.90
  4. Step 4: Simplify right side
    103,148.86x = 10,500,531,861.33
  5. Step 5: Solve for x
    x = 10,500,531,861.33/103,148.86
  6. Step 6: Final answer
    x = 101,799.79

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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.