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Finding the Fourth Proportional to 181,353.20, 272,029.80 and 128,476.40

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Solution

The fourth proportional to 181,353.20, 272,029.80 and 128,476.40 is: 192,714.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,353.20 : 272,029.80 = 128,476.40 : x
  2. Step 2: Convert to fraction form
    181,353.20/272,029.80 = 128,476.40/x
  3. Step 3: Cross multiply
    181,353.20x = 272,029.80 × 128,476.40
  4. Step 4: Simplify right side
    181,353.20x = 34,949,409,396.72
  5. Step 5: Solve for x
    x = 34,949,409,396.72/181,353.20
  6. Step 6: Final answer
    x = 192,714.60

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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.