Home / 205,320.24-307,926.90-86,930.64

Finding the Fourth Proportional to 205,320.24, 307,926.90 and 86,930.64

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Solution

The fourth proportional to 205,320.24, 307,926.90 and 86,930.64 is: 130,373.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,320.24 : 307,926.90 = 86,930.64 : x
  2. Step 2: Convert to fraction form
    205,320.24/307,926.90 = 86,930.64/x
  3. Step 3: Cross multiply
    205,320.24x = 307,926.90 × 86,930.64
  4. Step 4: Simplify right side
    205,320.24x = 26,768,282,490.22
  5. Step 5: Solve for x
    x = 26,768,282,490.22/205,320.24
  6. Step 6: Final answer
    x = 130,373.33

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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.