Home / 133,028.88-183,617.28-78,631.44

Finding the Fourth Proportional to 133,028.88, 183,617.28 and 78,631.44

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Solution

The fourth proportional to 133,028.88, 183,617.28 and 78,631.44 is: 108,533.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,028.88 : 183,617.28 = 78,631.44 : x
  2. Step 2: Convert to fraction form
    133,028.88/183,617.28 = 78,631.44/x
  3. Step 3: Cross multiply
    133,028.88x = 183,617.28 × 78,631.44
  4. Step 4: Simplify right side
    133,028.88x = 14,438,091,135.28
  5. Step 5: Solve for x
    x = 14,438,091,135.28/133,028.88
  6. Step 6: Final answer
    x = 108,533.51

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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.