Home / 205,055.80-307,626.90-86,666.20

Finding the Fourth Proportional to 205,055.80, 307,626.90 and 86,666.20

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Solution

The fourth proportional to 205,055.80, 307,626.90 and 86,666.20 is: 130,017.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,055.80 : 307,626.90 = 86,666.20 : x
  2. Step 2: Convert to fraction form
    205,055.80/307,626.90 = 86,666.20/x
  3. Step 3: Cross multiply
    205,055.80x = 307,626.90 × 86,666.20
  4. Step 4: Simplify right side
    205,055.80x = 26,660,854,440.78
  5. Step 5: Solve for x
    x = 26,660,854,440.78/205,055.80
  6. Step 6: Final answer
    x = 130,017.56

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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.