Home / 210,954.21-291,105.63-115,442.45

Finding the Fourth Proportional to 210,954.21, 291,105.63 and 115,442.45

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Solution

The fourth proportional to 210,954.21, 291,105.63 and 115,442.45 is: 159,304.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,954.21 : 291,105.63 = 115,442.45 : x
  2. Step 2: Convert to fraction form
    210,954.21/291,105.63 = 115,442.45/x
  3. Step 3: Cross multiply
    210,954.21x = 291,105.63 × 115,442.45
  4. Step 4: Simplify right side
    210,954.21x = 33,605,947,135.99
  5. Step 5: Solve for x
    x = 33,605,947,135.99/210,954.21
  6. Step 6: Final answer
    x = 159,304.46

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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.