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Finding the Fourth Proportional to 137,275.98, 189,444.06 and 76,845.12

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Solution

The fourth proportional to 137,275.98, 189,444.06 and 76,845.12 is: 106,048.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,275.98 : 189,444.06 = 76,845.12 : x
  2. Step 2: Convert to fraction form
    137,275.98/189,444.06 = 76,845.12/x
  3. Step 3: Cross multiply
    137,275.98x = 189,444.06 × 76,845.12
  4. Step 4: Simplify right side
    137,275.98x = 14,557,851,523.99
  5. Step 5: Solve for x
    x = 14,557,851,523.99/137,275.98
  6. Step 6: Final answer
    x = 106,048.06

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.