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Finding the Fourth Proportional to 181,820.80, 272,860.80 and 102,851.20

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Solution

The fourth proportional to 181,820.80, 272,860.80 and 102,851.20 is: 154,350.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,820.80 : 272,860.80 = 102,851.20 : x
  2. Step 2: Convert to fraction form
    181,820.80/272,860.80 = 102,851.20/x
  3. Step 3: Cross multiply
    181,820.80x = 272,860.80 × 102,851.20
  4. Step 4: Simplify right side
    181,820.80x = 28,064,060,712.96
  5. Step 5: Solve for x
    x = 28,064,060,712.96/181,820.80
  6. Step 6: Final answer
    x = 154,350.11

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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.