Home / 136,811.61-205,343.56-69,390.96

Finding the Fourth Proportional to 136,811.61, 205,343.56 and 69,390.96

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Solution

The fourth proportional to 136,811.61, 205,343.56 and 69,390.96 is: 104,150.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,811.61 : 205,343.56 = 69,390.96 : x
  2. Step 2: Convert to fraction form
    136,811.61/205,343.56 = 69,390.96/x
  3. Step 3: Cross multiply
    136,811.61x = 205,343.56 × 69,390.96
  4. Step 4: Simplify right side
    136,811.61x = 14,248,986,758.22
  5. Step 5: Solve for x
    x = 14,248,986,758.22/136,811.61
  6. Step 6: Final answer
    x = 104,150.42

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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.