Home / 205,781.92-308,594.40-72,637.36

Finding the Fourth Proportional to 205,781.92, 308,594.40 and 72,637.36

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Solution

The fourth proportional to 205,781.92, 308,594.40 and 72,637.36 is: 108,928.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,781.92 : 308,594.40 = 72,637.36 : x
  2. Step 2: Convert to fraction form
    205,781.92/308,594.40 = 72,637.36/x
  3. Step 3: Cross multiply
    205,781.92x = 308,594.40 × 72,637.36
  4. Step 4: Simplify right side
    205,781.92x = 22,415,482,526.78
  5. Step 5: Solve for x
    x = 22,415,482,526.78/205,781.92
  6. Step 6: Final answer
    x = 108,928.34

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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.