Home / 205,175.64-307,900.92-72,056.40

Finding the Fourth Proportional to 205,175.64, 307,900.92 and 72,056.40

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Solution

The fourth proportional to 205,175.64, 307,900.92 and 72,056.40 is: 108,132.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,175.64 : 307,900.92 = 72,056.40 : x
  2. Step 2: Convert to fraction form
    205,175.64/307,900.92 = 72,056.40/x
  3. Step 3: Cross multiply
    205,175.64x = 307,900.92 × 72,056.40
  4. Step 4: Simplify right side
    205,175.64x = 22,186,231,851.89
  5. Step 5: Solve for x
    x = 22,186,231,851.89/205,175.64
  6. Step 6: Final answer
    x = 108,132.88

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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.