Home / 114,612.30-171,918.45-72,621.90

Finding the Fourth Proportional to 114,612.30, 171,918.45 and 72,621.90

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Solution

The fourth proportional to 114,612.30, 171,918.45 and 72,621.90 is: 108,932.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,612.30 : 171,918.45 = 72,621.90 : x
  2. Step 2: Convert to fraction form
    114,612.30/171,918.45 = 72,621.90/x
  3. Step 3: Cross multiply
    114,612.30x = 171,918.45 × 72,621.90
  4. Step 4: Simplify right side
    114,612.30x = 12,485,044,484.06
  5. Step 5: Solve for x
    x = 12,485,044,484.06/114,612.30
  6. Step 6: Final answer
    x = 108,932.85

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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.