Home / 162,022.80-242,645.40-78,819.60

Finding the Fourth Proportional to 162,022.80, 242,645.40 and 78,819.60

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Solution

The fourth proportional to 162,022.80, 242,645.40 and 78,819.60 is: 118,040.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,022.80 : 242,645.40 = 78,819.60 : x
  2. Step 2: Convert to fraction form
    162,022.80/242,645.40 = 78,819.60/x
  3. Step 3: Cross multiply
    162,022.80x = 242,645.40 × 78,819.60
  4. Step 4: Simplify right side
    162,022.80x = 19,125,213,369.84
  5. Step 5: Solve for x
    x = 19,125,213,369.84/162,022.80
  6. Step 6: Final answer
    x = 118,040.26

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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.