Home / 114,979.20-172,468.80-99,772.80

Finding the Fourth Proportional to 114,979.20, 172,468.80 and 99,772.80

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Solution

The fourth proportional to 114,979.20, 172,468.80 and 99,772.80 is: 149,659.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,979.20 : 172,468.80 = 99,772.80 : x
  2. Step 2: Convert to fraction form
    114,979.20/172,468.80 = 99,772.80/x
  3. Step 3: Cross multiply
    114,979.20x = 172,468.80 × 99,772.80
  4. Step 4: Simplify right side
    114,979.20x = 17,207,695,088.64
  5. Step 5: Solve for x
    x = 17,207,695,088.64/114,979.20
  6. Step 6: Final answer
    x = 149,659.20

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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.