Home / 213,060.18-319,712.37-86,677.08

Finding the Fourth Proportional to 213,060.18, 319,712.37 and 86,677.08

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Solution

The fourth proportional to 213,060.18, 319,712.37 and 86,677.08 is: 130,065.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,060.18 : 319,712.37 = 86,677.08 : x
  2. Step 2: Convert to fraction form
    213,060.18/319,712.37 = 86,677.08/x
  3. Step 3: Cross multiply
    213,060.18x = 319,712.37 × 86,677.08
  4. Step 4: Simplify right side
    213,060.18x = 27,711,734,671.48
  5. Step 5: Solve for x
    x = 27,711,734,671.48/213,060.18
  6. Step 6: Final answer
    x = 130,065.29

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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.