Home / 136,910.60-205,145.10-77,569.80

Finding the Fourth Proportional to 136,910.60, 205,145.10 and 77,569.80

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Solution

The fourth proportional to 136,910.60, 205,145.10 and 77,569.80 is: 116,229.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,910.60 : 205,145.10 = 77,569.80 : x
  2. Step 2: Convert to fraction form
    136,910.60/205,145.10 = 77,569.80/x
  3. Step 3: Cross multiply
    136,910.60x = 205,145.10 × 77,569.80
  4. Step 4: Simplify right side
    136,910.60x = 15,913,064,377.98
  5. Step 5: Solve for x
    x = 15,913,064,377.98/136,910.60
  6. Step 6: Final answer
    x = 116,229.60

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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.