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Finding the Fourth Proportional to 134,777.81, 185,992.85 and 74,352.21

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Solution

The fourth proportional to 134,777.81, 185,992.85 and 74,352.21 is: 102,605.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,777.81 : 185,992.85 = 74,352.21 : x
  2. Step 2: Convert to fraction form
    134,777.81/185,992.85 = 74,352.21/x
  3. Step 3: Cross multiply
    134,777.81x = 185,992.85 × 74,352.21
  4. Step 4: Simplify right side
    134,777.81x = 13,828,979,069.94
  5. Step 5: Solve for x
    x = 13,828,979,069.94/134,777.81
  6. Step 6: Final answer
    x = 102,605.76

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1.5x scale

Why These Related Problems?

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