Home / 151,415.10-208,972.95-86,909.82

Finding the Fourth Proportional to 151,415.10, 208,972.95 and 86,909.82

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Solution

The fourth proportional to 151,415.10, 208,972.95 and 86,909.82 is: 119,947.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,415.10 : 208,972.95 = 86,909.82 : x
  2. Step 2: Convert to fraction form
    151,415.10/208,972.95 = 86,909.82/x
  3. Step 3: Cross multiply
    151,415.10x = 208,972.95 × 86,909.82
  4. Step 4: Simplify right side
    151,415.10x = 18,161,801,469.37
  5. Step 5: Solve for x
    x = 18,161,801,469.37/151,415.10
  6. Step 6: Final answer
    x = 119,947.10

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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.