Home / 151,742.78-209,405.04-83,759.77

Finding the Fourth Proportional to 151,742.78, 209,405.04 and 83,759.77

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Solution

The fourth proportional to 151,742.78, 209,405.04 and 83,759.77 is: 115,588.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,742.78 : 209,405.04 = 83,759.77 : x
  2. Step 2: Convert to fraction form
    151,742.78/209,405.04 = 83,759.77/x
  3. Step 3: Cross multiply
    151,742.78x = 209,405.04 × 83,759.77
  4. Step 4: Simplify right side
    151,742.78x = 17,539,717,463.73
  5. Step 5: Solve for x
    x = 17,539,717,463.73/151,742.78
  6. Step 6: Final answer
    x = 115,588.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.