Home / 138,784.08-208,186.65-54,503.58

Finding the Fourth Proportional to 138,784.08, 208,186.65 and 54,503.58

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Solution

The fourth proportional to 138,784.08, 208,186.65 and 54,503.58 is: 81,759.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,784.08 : 208,186.65 = 54,503.58 : x
  2. Step 2: Convert to fraction form
    138,784.08/208,186.65 = 54,503.58/x
  3. Step 3: Cross multiply
    138,784.08x = 208,186.65 × 54,503.58
  4. Step 4: Simplify right side
    138,784.08x = 11,346,917,733.21
  5. Step 5: Solve for x
    x = 11,346,917,733.21/138,784.08
  6. Step 6: Final answer
    x = 81,759.51

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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.