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Finding the Fourth Proportional to 107,178.40, 160,940.40 and 72,272.80

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Solution

The fourth proportional to 107,178.40, 160,940.40 and 72,272.80 is: 108,525.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,178.40 : 160,940.40 = 72,272.80 : x
  2. Step 2: Convert to fraction form
    107,178.40/160,940.40 = 72,272.80/x
  3. Step 3: Cross multiply
    107,178.40x = 160,940.40 × 72,272.80
  4. Step 4: Simplify right side
    107,178.40x = 11,631,613,341.12
  5. Step 5: Solve for x
    x = 11,631,613,341.12/107,178.40
  6. Step 6: Final answer
    x = 108,525.72

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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.