Home / 151,415.12-208,940.70-87,757.02

Finding the Fourth Proportional to 151,415.12, 208,940.70 and 87,757.02

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Solution

The fourth proportional to 151,415.12, 208,940.70 and 87,757.02 is: 121,097.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,415.12 : 208,940.70 = 87,757.02 : x
  2. Step 2: Convert to fraction form
    151,415.12/208,940.70 = 87,757.02/x
  3. Step 3: Cross multiply
    151,415.12x = 208,940.70 × 87,757.02
  4. Step 4: Simplify right side
    151,415.12x = 18,336,013,188.71
  5. Step 5: Solve for x
    x = 18,336,013,188.71/151,415.12
  6. Step 6: Final answer
    x = 121,097.64

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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.