Home / 211,112.73-291,263.18-120,403.46

Finding the Fourth Proportional to 211,112.73, 291,263.18 and 120,403.46

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Solution

The fourth proportional to 211,112.73, 291,263.18 and 120,403.46 is: 166,115.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,112.73 : 291,263.18 = 120,403.46 : x
  2. Step 2: Convert to fraction form
    211,112.73/291,263.18 = 120,403.46/x
  3. Step 3: Cross multiply
    211,112.73x = 291,263.18 × 120,403.46
  4. Step 4: Simplify right side
    211,112.73x = 35,069,094,768.74
  5. Step 5: Solve for x
    x = 35,069,094,768.74/211,112.73
  6. Step 6: Final answer
    x = 166,115.49

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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.