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Finding the Fourth Proportional to 136,776.85, 205,526.08 and 73,643.65

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Solution

The fourth proportional to 136,776.85, 205,526.08 and 73,643.65 is: 110,659.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,776.85 : 205,526.08 = 73,643.65 : x
  2. Step 2: Convert to fraction form
    136,776.85/205,526.08 = 73,643.65/x
  3. Step 3: Cross multiply
    136,776.85x = 205,526.08 × 73,643.65
  4. Step 4: Simplify right side
    136,776.85x = 15,135,689,673.76
  5. Step 5: Solve for x
    x = 15,135,689,673.76/136,776.85
  6. Step 6: Final answer
    x = 110,659.74

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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.