Home / 151,288.40-208,759.88-87,617.36

Finding the Fourth Proportional to 151,288.40, 208,759.88 and 87,617.36

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Solution

The fourth proportional to 151,288.40, 208,759.88 and 87,617.36 is: 120,901.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,288.40 : 208,759.88 = 87,617.36 : x
  2. Step 2: Convert to fraction form
    151,288.40/208,759.88 = 87,617.36/x
  3. Step 3: Cross multiply
    151,288.40x = 208,759.88 × 87,617.36
  4. Step 4: Simplify right side
    151,288.40x = 18,290,989,559.52
  5. Step 5: Solve for x
    x = 18,290,989,559.52/151,288.40
  6. Step 6: Final answer
    x = 120,901.47

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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.