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Finding the Fourth Proportional to 137,051.80, 205,577.70 and 121,384.60

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Solution

The fourth proportional to 137,051.80, 205,577.70 and 121,384.60 is: 182,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,051.80 : 205,577.70 = 121,384.60 : x
  2. Step 2: Convert to fraction form
    137,051.80/205,577.70 = 121,384.60/x
  3. Step 3: Cross multiply
    137,051.80x = 205,577.70 × 121,384.60
  4. Step 4: Simplify right side
    137,051.80x = 24,953,966,883.42
  5. Step 5: Solve for x
    x = 24,953,966,883.42/137,051.80
  6. Step 6: Final answer
    x = 182,076.90

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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.