Home / 165,913.20-248,869.80-77,137.20

Finding the Fourth Proportional to 165,913.20, 248,869.80 and 77,137.20

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Solution

The fourth proportional to 165,913.20, 248,869.80 and 77,137.20 is: 115,705.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,913.20 : 248,869.80 = 77,137.20 : x
  2. Step 2: Convert to fraction form
    165,913.20/248,869.80 = 77,137.20/x
  3. Step 3: Cross multiply
    165,913.20x = 248,869.80 × 77,137.20
  4. Step 4: Simplify right side
    165,913.20x = 19,197,119,536.56
  5. Step 5: Solve for x
    x = 19,197,119,536.56/165,913.20
  6. Step 6: Final answer
    x = 115,705.80

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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.