Home / 138,686.64-208,061.16-43,922.58

Finding the Fourth Proportional to 138,686.64, 208,061.16 and 43,922.58

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Solution

The fourth proportional to 138,686.64, 208,061.16 and 43,922.58 is: 65,893.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,686.64 : 208,061.16 = 43,922.58 : x
  2. Step 2: Convert to fraction form
    138,686.64/208,061.16 = 43,922.58/x
  3. Step 3: Cross multiply
    138,686.64x = 208,061.16 × 43,922.58
  4. Step 4: Simplify right side
    138,686.64x = 9,138,582,944.99
  5. Step 5: Solve for x
    x = 9,138,582,944.99/138,686.64
  6. Step 6: Final answer
    x = 65,893.75

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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.