Home / 205,172.20-307,758.30-64,941.80

Finding the Fourth Proportional to 205,172.20, 307,758.30 and 64,941.80

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Solution

The fourth proportional to 205,172.20, 307,758.30 and 64,941.80 is: 97,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,172.20 : 307,758.30 = 64,941.80 : x
  2. Step 2: Convert to fraction form
    205,172.20/307,758.30 = 64,941.80/x
  3. Step 3: Cross multiply
    205,172.20x = 307,758.30 × 64,941.80
  4. Step 4: Simplify right side
    205,172.20x = 19,986,377,966.94
  5. Step 5: Solve for x
    x = 19,986,377,966.94/205,172.20
  6. Step 6: Final answer
    x = 97,412.70

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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.