Home / 205,107.40-307,632.30-64,880.20

Finding the Fourth Proportional to 205,107.40, 307,632.30 and 64,880.20

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Solution

The fourth proportional to 205,107.40, 307,632.30 and 64,880.20 is: 97,311.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,107.40 : 307,632.30 = 64,880.20 : x
  2. Step 2: Convert to fraction form
    205,107.40/307,632.30 = 64,880.20/x
  3. Step 3: Cross multiply
    205,107.40x = 307,632.30 × 64,880.20
  4. Step 4: Simplify right side
    205,107.40x = 19,959,245,150.46
  5. Step 5: Solve for x
    x = 19,959,245,150.46/205,107.40
  6. Step 6: Final answer
    x = 97,311.19

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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.