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Finding the Fourth Proportional to 114,930.80, 172,444.80 and 72,843.20

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Solution

The fourth proportional to 114,930.80, 172,444.80 and 72,843.20 is: 109,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,930.80 : 172,444.80 = 72,843.20 : x
  2. Step 2: Convert to fraction form
    114,930.80/172,444.80 = 72,843.20/x
  3. Step 3: Cross multiply
    114,930.80x = 172,444.80 × 72,843.20
  4. Step 4: Simplify right side
    114,930.80x = 12,561,431,055.36
  5. Step 5: Solve for x
    x = 12,561,431,055.36/114,930.80
  6. Step 6: Final answer
    x = 109,295.60

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1.5x scale

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.