Home / 101,309.85-151,828.94-78,847.66

Finding the Fourth Proportional to 101,309.85, 151,828.94 and 78,847.66

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Solution

The fourth proportional to 101,309.85, 151,828.94 and 78,847.66 is: 118,165.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,309.85 : 151,828.94 = 78,847.66 : x
  2. Step 2: Convert to fraction form
    101,309.85/151,828.94 = 78,847.66/x
  3. Step 3: Cross multiply
    101,309.85x = 151,828.94 × 78,847.66
  4. Step 4: Simplify right side
    101,309.85x = 11,971,356,639.28
  5. Step 5: Solve for x
    x = 11,971,356,639.28/101,309.85
  6. Step 6: Final answer
    x = 118,165.77

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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.