Home / 213,219.96-319,712.28-86,827.80

Finding the Fourth Proportional to 213,219.96, 319,712.28 and 86,827.80

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Solution

The fourth proportional to 213,219.96, 319,712.28 and 86,827.80 is: 130,193.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,219.96 : 319,712.28 = 86,827.80 : x
  2. Step 2: Convert to fraction form
    213,219.96/319,712.28 = 86,827.80/x
  3. Step 3: Cross multiply
    213,219.96x = 319,712.28 × 86,827.80
  4. Step 4: Simplify right side
    213,219.96x = 27,759,913,905.38
  5. Step 5: Solve for x
    x = 27,759,913,905.38/213,219.96
  6. Step 6: Final answer
    x = 130,193.79

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1.5x scale

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.