Home / 138,976.96-208,477.74-39,138.04

Finding the Fourth Proportional to 138,976.96, 208,477.74 and 39,138.04

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Solution

The fourth proportional to 138,976.96, 208,477.74 and 39,138.04 is: 58,710.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,976.96 : 208,477.74 = 39,138.04 : x
  2. Step 2: Convert to fraction form
    138,976.96/208,477.74 = 39,138.04/x
  3. Step 3: Cross multiply
    138,976.96x = 208,477.74 × 39,138.04
  4. Step 4: Simplify right side
    138,976.96x = 8,159,410,127.23
  5. Step 5: Solve for x
    x = 8,159,410,127.23/138,976.96
  6. Step 6: Final answer
    x = 58,710.52

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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.