Home / 147,789.40-203,876.30-87,330.79

Finding the Fourth Proportional to 147,789.40, 203,876.30 and 87,330.79

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Solution

The fourth proportional to 147,789.40, 203,876.30 and 87,330.79 is: 120,473.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,789.40 : 203,876.30 = 87,330.79 : x
  2. Step 2: Convert to fraction form
    147,789.40/203,876.30 = 87,330.79/x
  3. Step 3: Cross multiply
    147,789.40x = 203,876.30 × 87,330.79
  4. Step 4: Simplify right side
    147,789.40x = 17,804,677,904.62
  5. Step 5: Solve for x
    x = 17,804,677,904.62/147,789.40
  6. Step 6: Final answer
    x = 120,473.31

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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.