Home / 213,275.50-319,823.93-86,829.75

Finding the Fourth Proportional to 213,275.50, 319,823.93 and 86,829.75

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Solution

The fourth proportional to 213,275.50, 319,823.93 and 86,829.75 is: 130,208.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,275.50 : 319,823.93 = 86,829.75 : x
  2. Step 2: Convert to fraction form
    213,275.50/319,823.93 = 86,829.75/x
  3. Step 3: Cross multiply
    213,275.50x = 319,823.93 × 86,829.75
  4. Step 4: Simplify right side
    213,275.50x = 27,770,232,102.99
  5. Step 5: Solve for x
    x = 27,770,232,102.99/213,275.50
  6. Step 6: Final answer
    x = 130,208.26

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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.