Home / 114,931.20-172,396.80-99,724.80

Finding the Fourth Proportional to 114,931.20, 172,396.80 and 99,724.80

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Solution

The fourth proportional to 114,931.20, 172,396.80 and 99,724.80 is: 149,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,931.20 : 172,396.80 = 99,724.80 : x
  2. Step 2: Convert to fraction form
    114,931.20/172,396.80 = 99,724.80/x
  3. Step 3: Cross multiply
    114,931.20x = 172,396.80 × 99,724.80
  4. Step 4: Simplify right side
    114,931.20x = 17,192,236,400.64
  5. Step 5: Solve for x
    x = 17,192,236,400.64/114,931.20
  6. Step 6: Final answer
    x = 149,587.20

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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.