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Finding the Fourth Proportional to 121,991.47, 182,941.94 and 42,007.11

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Solution

The fourth proportional to 121,991.47, 182,941.94 and 42,007.11 is: 62,995.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,991.47 : 182,941.94 = 42,007.11 : x
  2. Step 2: Convert to fraction form
    121,991.47/182,941.94 = 42,007.11/x
  3. Step 3: Cross multiply
    121,991.47x = 182,941.94 × 42,007.11
  4. Step 4: Simplify right side
    121,991.47x = 7,684,861,616.18
  5. Step 5: Solve for x
    x = 7,684,861,616.18/121,991.47
  6. Step 6: Final answer
    x = 62,995.07

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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.