Home / 156,186.96-234,404.36-81,328.40

Finding the Fourth Proportional to 156,186.96, 234,404.36 and 81,328.40

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Solution

The fourth proportional to 156,186.96, 234,404.36 and 81,328.40 is: 122,057.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,186.96 : 234,404.36 = 81,328.40 : x
  2. Step 2: Convert to fraction form
    156,186.96/234,404.36 = 81,328.40/x
  3. Step 3: Cross multiply
    156,186.96x = 234,404.36 × 81,328.40
  4. Step 4: Simplify right side
    156,186.96x = 19,063,731,551.82
  5. Step 5: Solve for x
    x = 19,063,731,551.82/156,186.96
  6. Step 6: Final answer
    x = 122,057.13

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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.