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Finding the Fourth Proportional to 121,219.62, 181,628.88 and 61,973.76

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Solution

The fourth proportional to 121,219.62, 181,628.88 and 61,973.76 is: 92,858.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,219.62 : 181,628.88 = 61,973.76 : x
  2. Step 2: Convert to fraction form
    121,219.62/181,628.88 = 61,973.76/x
  3. Step 3: Cross multiply
    121,219.62x = 181,628.88 × 61,973.76
  4. Step 4: Simplify right side
    121,219.62x = 11,256,224,618.19
  5. Step 5: Solve for x
    x = 11,256,224,618.19/121,219.62
  6. Step 6: Final answer
    x = 92,858.11

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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.