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Finding the Fourth Proportional to 157,790.78, 236,803.72 and 115,779.42

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Solution

The fourth proportional to 157,790.78, 236,803.72 and 115,779.42 is: 173,755.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,790.78 : 236,803.72 = 115,779.42 : x
  2. Step 2: Convert to fraction form
    157,790.78/236,803.72 = 115,779.42/x
  3. Step 3: Cross multiply
    157,790.78x = 236,803.72 × 115,779.42
  4. Step 4: Simplify right side
    157,790.78x = 27,416,997,355.44
  5. Step 5: Solve for x
    x = 27,416,997,355.44/157,790.78
  6. Step 6: Final answer
    x = 173,755.38

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1.5x scale

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.