Home / 136,166.10-204,415.55-77,042.90

Finding the Fourth Proportional to 136,166.10, 204,415.55 and 77,042.90

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Solution

The fourth proportional to 136,166.10, 204,415.55 and 77,042.90 is: 115,658.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,166.10 : 204,415.55 = 77,042.90 : x
  2. Step 2: Convert to fraction form
    136,166.10/204,415.55 = 77,042.90/x
  3. Step 3: Cross multiply
    136,166.10x = 204,415.55 × 77,042.90
  4. Step 4: Simplify right side
    136,166.10x = 15,748,766,777.10
  5. Step 5: Solve for x
    x = 15,748,766,777.10/136,166.10
  6. Step 6: Final answer
    x = 115,658.50

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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.