Home / 137,485.20-205,961.79-77,330.93

Finding the Fourth Proportional to 137,485.20, 205,961.79 and 77,330.93

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Solution

The fourth proportional to 137,485.20, 205,961.79 and 77,330.93 is: 115,846.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,485.20 : 205,961.79 = 77,330.93 : x
  2. Step 2: Convert to fraction form
    137,485.20/205,961.79 = 77,330.93/x
  3. Step 3: Cross multiply
    137,485.20x = 205,961.79 × 77,330.93
  4. Step 4: Simplify right side
    137,485.20x = 15,927,216,378.51
  5. Step 5: Solve for x
    x = 15,927,216,378.51/137,485.20
  6. Step 6: Final answer
    x = 115,846.77

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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.