Home / 138,669.69-208,035.86-43,905.63

Finding the Fourth Proportional to 138,669.69, 208,035.86 and 43,905.63

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Solution

The fourth proportional to 138,669.69, 208,035.86 and 43,905.63 is: 65,868.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,669.69 : 208,035.86 = 43,905.63 : x
  2. Step 2: Convert to fraction form
    138,669.69/208,035.86 = 43,905.63/x
  3. Step 3: Cross multiply
    138,669.69x = 208,035.86 × 43,905.63
  4. Step 4: Simplify right side
    138,669.69x = 9,133,945,276.36
  5. Step 5: Solve for x
    x = 9,133,945,276.36/138,669.69
  6. Step 6: Final answer
    x = 65,868.36

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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.