Home / 151,212.30-208,659.42-87,554.40

Finding the Fourth Proportional to 151,212.30, 208,659.42 and 87,554.40

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Solution

The fourth proportional to 151,212.30, 208,659.42 and 87,554.40 is: 120,817.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,212.30 : 208,659.42 = 87,554.40 : x
  2. Step 2: Convert to fraction form
    151,212.30/208,659.42 = 87,554.40/x
  3. Step 3: Cross multiply
    151,212.30x = 208,659.42 × 87,554.40
  4. Step 4: Simplify right side
    151,212.30x = 18,269,050,322.45
  5. Step 5: Solve for x
    x = 18,269,050,322.45/151,212.30
  6. Step 6: Final answer
    x = 120,817.22

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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.