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Finding the Fourth Proportional to 151,987.62, 228,047.01 and 81,852.90

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Solution

The fourth proportional to 151,987.62, 228,047.01 and 81,852.90 is: 122,814.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,987.62 : 228,047.01 = 81,852.90 : x
  2. Step 2: Convert to fraction form
    151,987.62/228,047.01 = 81,852.90/x
  3. Step 3: Cross multiply
    151,987.62x = 228,047.01 × 81,852.90
  4. Step 4: Simplify right side
    151,987.62x = 18,666,309,104.83
  5. Step 5: Solve for x
    x = 18,666,309,104.83/151,987.62
  6. Step 6: Final answer
    x = 122,814.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.