Home / 151,335.63-208,867.68-87,710.31

Finding the Fourth Proportional to 151,335.63, 208,867.68 and 87,710.31

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Solution

The fourth proportional to 151,335.63, 208,867.68 and 87,710.31 is: 121,054.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,335.63 : 208,867.68 = 87,710.31 : x
  2. Step 2: Convert to fraction form
    151,335.63/208,867.68 = 87,710.31/x
  3. Step 3: Cross multiply
    151,335.63x = 208,867.68 × 87,710.31
  4. Step 4: Simplify right side
    151,335.63x = 18,319,848,961.78
  5. Step 5: Solve for x
    x = 18,319,848,961.78/151,335.63
  6. Step 6: Final answer
    x = 121,054.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.