Home / 157,255.90-217,086.69-100,699.54

Finding the Fourth Proportional to 157,255.90, 217,086.69 and 100,699.54

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Solution

The fourth proportional to 157,255.90, 217,086.69 and 100,699.54 is: 139,012.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,255.90 : 217,086.69 = 100,699.54 : x
  2. Step 2: Convert to fraction form
    157,255.90/217,086.69 = 100,699.54/x
  3. Step 3: Cross multiply
    157,255.90x = 217,086.69 × 100,699.54
  4. Step 4: Simplify right side
    157,255.90x = 21,860,529,823.12
  5. Step 5: Solve for x
    x = 21,860,529,823.12/157,255.90
  6. Step 6: Final answer
    x = 139,012.46

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1.5x scale

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.