Home / 231,886.36-319,930.51-129,898.05

Finding the Fourth Proportional to 231,886.36, 319,930.51 and 129,898.05

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Solution

The fourth proportional to 231,886.36, 319,930.51 and 129,898.05 is: 179,218.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,886.36 : 319,930.51 = 129,898.05 : x
  2. Step 2: Convert to fraction form
    231,886.36/319,930.51 = 129,898.05/x
  3. Step 3: Cross multiply
    231,886.36x = 319,930.51 × 129,898.05
  4. Step 4: Simplify right side
    231,886.36x = 41,558,349,384.51
  5. Step 5: Solve for x
    x = 41,558,349,384.51/231,886.36
  6. Step 6: Final answer
    x = 179,218.60

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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.