Home / 114,927.30-172,439.55-72,839.70

Finding the Fourth Proportional to 114,927.30, 172,439.55 and 72,839.70

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Solution

The fourth proportional to 114,927.30, 172,439.55 and 72,839.70 is: 109,290.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,927.30 : 172,439.55 = 72,839.70 : x
  2. Step 2: Convert to fraction form
    114,927.30/172,439.55 = 72,839.70/x
  3. Step 3: Cross multiply
    114,927.30x = 172,439.55 × 72,839.70
  4. Step 4: Simplify right side
    114,927.30x = 12,560,445,090.14
  5. Step 5: Solve for x
    x = 12,560,445,090.14/114,927.30
  6. Step 6: Final answer
    x = 109,290.35

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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.