Home / 210,748.43-315,974.79-77,611.62

Finding the Fourth Proportional to 210,748.43, 315,974.79 and 77,611.62

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Solution

The fourth proportional to 210,748.43, 315,974.79 and 77,611.62 is: 116,362.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,748.43 : 315,974.79 = 77,611.62 : x
  2. Step 2: Convert to fraction form
    210,748.43/315,974.79 = 77,611.62/x
  3. Step 3: Cross multiply
    210,748.43x = 315,974.79 × 77,611.62
  4. Step 4: Simplify right side
    210,748.43x = 24,523,315,331.06
  5. Step 5: Solve for x
    x = 24,523,315,331.06/210,748.43
  6. Step 6: Final answer
    x = 116,362.98

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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.