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Finding the Fourth Proportional to 145,171.20, 217,468.80 and 127,852.80

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Solution

The fourth proportional to 145,171.20, 217,468.80 and 127,852.80 is: 191,525.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,171.20 : 217,468.80 = 127,852.80 : x
  2. Step 2: Convert to fraction form
    145,171.20/217,468.80 = 127,852.80/x
  3. Step 3: Cross multiply
    145,171.20x = 217,468.80 × 127,852.80
  4. Step 4: Simplify right side
    145,171.20x = 27,803,994,992.64
  5. Step 5: Solve for x
    x = 27,803,994,992.64/145,171.20
  6. Step 6: Final answer
    x = 191,525.56

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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.