Home / 100,778.40-151,220.70-44,657.28

Finding the Fourth Proportional to 100,778.40, 151,220.70 and 44,657.28

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Solution

The fourth proportional to 100,778.40, 151,220.70 and 44,657.28 is: 67,009.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,778.40 : 151,220.70 = 44,657.28 : x
  2. Step 2: Convert to fraction form
    100,778.40/151,220.70 = 44,657.28/x
  3. Step 3: Cross multiply
    100,778.40x = 151,220.70 × 44,657.28
  4. Step 4: Simplify right side
    100,778.40x = 6,753,105,141.70
  5. Step 5: Solve for x
    x = 6,753,105,141.70/100,778.40
  6. Step 6: Final answer
    x = 67,009.45

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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.