Home / 151,110.66-208,539.72-87,436.11

Finding the Fourth Proportional to 151,110.66, 208,539.72 and 87,436.11

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Solution

The fourth proportional to 151,110.66, 208,539.72 and 87,436.11 is: 120,665.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,110.66 : 208,539.72 = 87,436.11 : x
  2. Step 2: Convert to fraction form
    151,110.66/208,539.72 = 87,436.11/x
  3. Step 3: Cross multiply
    151,110.66x = 208,539.72 × 87,436.11
  4. Step 4: Simplify right side
    151,110.66x = 18,233,901,897.29
  5. Step 5: Solve for x
    x = 18,233,901,897.29/151,110.66
  6. Step 6: Final answer
    x = 120,665.89

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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.