Home / 205,095.80-307,686.90-86,706.20

Finding the Fourth Proportional to 205,095.80, 307,686.90 and 86,706.20

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Solution

The fourth proportional to 205,095.80, 307,686.90 and 86,706.20 is: 130,077.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,095.80 : 307,686.90 = 86,706.20 : x
  2. Step 2: Convert to fraction form
    205,095.80/307,686.90 = 86,706.20/x
  3. Step 3: Cross multiply
    205,095.80x = 307,686.90 × 86,706.20
  4. Step 4: Simplify right side
    205,095.80x = 26,678,361,888.78
  5. Step 5: Solve for x
    x = 26,678,361,888.78/205,095.80
  6. Step 6: Final answer
    x = 130,077.56

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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.