Home / 137,485.82-205,962.72-77,331.56

Finding the Fourth Proportional to 137,485.82, 205,962.72 and 77,331.56

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Solution

The fourth proportional to 137,485.82, 205,962.72 and 77,331.56 is: 115,847.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,485.82 : 205,962.72 = 77,331.56 : x
  2. Step 2: Convert to fraction form
    137,485.82/205,962.72 = 77,331.56/x
  3. Step 3: Cross multiply
    137,485.82x = 205,962.72 × 77,331.56
  4. Step 4: Simplify right side
    137,485.82x = 15,927,417,409.63
  5. Step 5: Solve for x
    x = 15,927,417,409.63/137,485.82
  6. Step 6: Final answer
    x = 115,847.71

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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.