Home / 137,438.18-189,684.72-77,012.94

Finding the Fourth Proportional to 137,438.18, 189,684.72 and 77,012.94

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Solution

The fourth proportional to 137,438.18, 189,684.72 and 77,012.94 is: 106,289.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,438.18 : 189,684.72 = 77,012.94 : x
  2. Step 2: Convert to fraction form
    137,438.18/189,684.72 = 77,012.94/x
  3. Step 3: Cross multiply
    137,438.18x = 189,684.72 × 77,012.94
  4. Step 4: Simplify right side
    137,438.18x = 14,608,177,960.28
  5. Step 5: Solve for x
    x = 14,608,177,960.28/137,438.18
  6. Step 6: Final answer
    x = 106,289.08

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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.