Home / 205,743.60-308,561.40-87,354

Finding the Fourth Proportional to 205,743.60, 308,561.40 and 87,354

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Solution

The fourth proportional to 205,743.60, 308,561.40 and 87,354 is: 131,008.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,743.60 : 308,561.40 = 87,354 : x
  2. Step 2: Convert to fraction form
    205,743.60/308,561.40 = 87,354/x
  3. Step 3: Cross multiply
    205,743.60x = 308,561.40 × 87,354
  4. Step 4: Simplify right side
    205,743.60x = 26,954,072,535.60
  5. Step 5: Solve for x
    x = 26,954,072,535.60/205,743.60
  6. Step 6: Final answer
    x = 131,008.07

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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.