Home / 157,944.90-218,145.02-115,115.34

Finding the Fourth Proportional to 157,944.90, 218,145.02 and 115,115.34

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Solution

The fourth proportional to 157,944.90, 218,145.02 and 115,115.34 is: 158,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,944.90 : 218,145.02 = 115,115.34 : x
  2. Step 2: Convert to fraction form
    157,944.90/218,145.02 = 115,115.34/x
  3. Step 3: Cross multiply
    157,944.90x = 218,145.02 × 115,115.34
  4. Step 4: Simplify right side
    157,944.90x = 25,111,837,571.03
  5. Step 5: Solve for x
    x = 25,111,837,571.03/157,944.90
  6. Step 6: Final answer
    x = 158,991.13

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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.