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Finding the Fourth Proportional to 138,673.13, 208,041.01 and 43,909.07

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Solution

The fourth proportional to 138,673.13, 208,041.01 and 43,909.07 is: 65,873.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,673.13 : 208,041.01 = 43,909.07 : x
  2. Step 2: Convert to fraction form
    138,673.13/208,041.01 = 43,909.07/x
  3. Step 3: Cross multiply
    138,673.13x = 208,041.01 × 43,909.07
  4. Step 4: Simplify right side
    138,673.13x = 9,134,887,270.96
  5. Step 5: Solve for x
    x = 9,134,887,270.96/138,673.13
  6. Step 6: Final answer
    x = 65,873.52

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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.