Home / 153,914.76-231,014.06-78,066.53

Finding the Fourth Proportional to 153,914.76, 231,014.06 and 78,066.53

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Solution

The fourth proportional to 153,914.76, 231,014.06 and 78,066.53 is: 117,171.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,914.76 : 231,014.06 = 78,066.53 : x
  2. Step 2: Convert to fraction form
    153,914.76/231,014.06 = 78,066.53/x
  3. Step 3: Cross multiply
    153,914.76x = 231,014.06 × 78,066.53
  4. Step 4: Simplify right side
    153,914.76x = 18,034,466,045.41
  5. Step 5: Solve for x
    x = 18,034,466,045.41/153,914.76
  6. Step 6: Final answer
    x = 117,171.78

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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.