Home / 205,178.28-307,911.96-72,068.91

Finding the Fourth Proportional to 205,178.28, 307,911.96 and 72,068.91

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Solution

The fourth proportional to 205,178.28, 307,911.96 and 72,068.91 is: 108,154.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,178.28 : 307,911.96 = 72,068.91 : x
  2. Step 2: Convert to fraction form
    205,178.28/307,911.96 = 72,068.91/x
  3. Step 3: Cross multiply
    205,178.28x = 307,911.96 × 72,068.91
  4. Step 4: Simplify right side
    205,178.28x = 22,190,879,333.16
  5. Step 5: Solve for x
    x = 22,190,879,333.16/205,178.28
  6. Step 6: Final answer
    x = 108,154.13

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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.