Home / 205,003.30-307,548.15-86,613.70

Finding the Fourth Proportional to 205,003.30, 307,548.15 and 86,613.70

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Solution

The fourth proportional to 205,003.30, 307,548.15 and 86,613.70 is: 129,938.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,003.30 : 307,548.15 = 86,613.70 : x
  2. Step 2: Convert to fraction form
    205,003.30/307,548.15 = 86,613.70/x
  3. Step 3: Cross multiply
    205,003.30x = 307,548.15 × 86,613.70
  4. Step 4: Simplify right side
    205,003.30x = 26,637,883,199.66
  5. Step 5: Solve for x
    x = 26,637,883,199.66/205,003.30
  6. Step 6: Final answer
    x = 129,938.80

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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.