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Finding the Fourth Proportional to 181,669.60, 272,212.80 and 119,267.20

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Solution

The fourth proportional to 181,669.60, 272,212.80 and 119,267.20 is: 178,709.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,669.60 : 272,212.80 = 119,267.20 : x
  2. Step 2: Convert to fraction form
    181,669.60/272,212.80 = 119,267.20/x
  3. Step 3: Cross multiply
    181,669.60x = 272,212.80 × 119,267.20
  4. Step 4: Simplify right side
    181,669.60x = 32,466,058,460.16
  5. Step 5: Solve for x
    x = 32,466,058,460.16/181,669.60
  6. Step 6: Final answer
    x = 178,709.36

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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.