Home / 151,340.61-208,850.03-87,715.31

Finding the Fourth Proportional to 151,340.61, 208,850.03 and 87,715.31

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Solution

The fourth proportional to 151,340.61, 208,850.03 and 87,715.31 is: 121,047.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,340.61 : 208,850.03 = 87,715.31 : x
  2. Step 2: Convert to fraction form
    151,340.61/208,850.03 = 87,715.31/x
  3. Step 3: Cross multiply
    151,340.61x = 208,850.03 × 87,715.31
  4. Step 4: Simplify right side
    151,340.61x = 18,319,344,164.26
  5. Step 5: Solve for x
    x = 18,319,344,164.26/151,340.61
  6. Step 6: Final answer
    x = 121,047.12

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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.