Home / 114,928.20-172,392.30-99,721.80

Finding the Fourth Proportional to 114,928.20, 172,392.30 and 99,721.80

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Solution

The fourth proportional to 114,928.20, 172,392.30 and 99,721.80 is: 149,582.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,928.20 : 172,392.30 = 99,721.80 : x
  2. Step 2: Convert to fraction form
    114,928.20/172,392.30 = 99,721.80/x
  3. Step 3: Cross multiply
    114,928.20x = 172,392.30 × 99,721.80
  4. Step 4: Simplify right side
    114,928.20x = 17,191,270,462.14
  5. Step 5: Solve for x
    x = 17,191,270,462.14/114,928.20
  6. Step 6: Final answer
    x = 149,582.70

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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.