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Finding the Fourth Proportional to 121,888.58, 182,800.11 and 42,992.42

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Solution

The fourth proportional to 121,888.58, 182,800.11 and 42,992.42 is: 64,477.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,888.58 : 182,800.11 = 42,992.42 : x
  2. Step 2: Convert to fraction form
    121,888.58/182,800.11 = 42,992.42/x
  3. Step 3: Cross multiply
    121,888.58x = 182,800.11 × 42,992.42
  4. Step 4: Simplify right side
    121,888.58x = 7,859,019,105.17
  5. Step 5: Solve for x
    x = 7,859,019,105.17/121,888.58
  6. Step 6: Final answer
    x = 64,477.07

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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.