Home / 205,066.42-307,736.30-78,810.91

Finding the Fourth Proportional to 205,066.42, 307,736.30 and 78,810.91

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Solution

The fourth proportional to 205,066.42, 307,736.30 and 78,810.91 is: 118,268.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,066.42 : 307,736.30 = 78,810.91 : x
  2. Step 2: Convert to fraction form
    205,066.42/307,736.30 = 78,810.91/x
  3. Step 3: Cross multiply
    205,066.42x = 307,736.30 × 78,810.91
  4. Step 4: Simplify right side
    205,066.42x = 24,252,977,270.72
  5. Step 5: Solve for x
    x = 24,252,977,270.72/205,066.42
  6. Step 6: Final answer
    x = 118,268.89

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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.