Home / 205,160.90-307,698.15-86,836.10

Finding the Fourth Proportional to 205,160.90, 307,698.15 and 86,836.10

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Solution

The fourth proportional to 205,160.90, 307,698.15 and 86,836.10 is: 130,235.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,160.90 : 307,698.15 = 86,836.10 : x
  2. Step 2: Convert to fraction form
    205,160.90/307,698.15 = 86,836.10/x
  3. Step 3: Cross multiply
    205,160.90x = 307,698.15 × 86,836.10
  4. Step 4: Simplify right side
    205,160.90x = 26,719,307,323.22
  5. Step 5: Solve for x
    x = 26,719,307,323.22/205,160.90
  6. Step 6: Final answer
    x = 130,235.87

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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.