Home / 205,007.16-307,509.78-64,765.56

Finding the Fourth Proportional to 205,007.16, 307,509.78 and 64,765.56

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Solution

The fourth proportional to 205,007.16, 307,509.78 and 64,765.56 is: 97,148.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,007.16 : 307,509.78 = 64,765.56 : x
  2. Step 2: Convert to fraction form
    205,007.16/307,509.78 = 64,765.56/x
  3. Step 3: Cross multiply
    205,007.16x = 307,509.78 × 64,765.56
  4. Step 4: Simplify right side
    205,007.16x = 19,916,043,107.18
  5. Step 5: Solve for x
    x = 19,916,043,107.18/205,007.16
  6. Step 6: Final answer
    x = 97,148.04

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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.