Home / 137,583.21-189,607.74-107,320.60

Finding the Fourth Proportional to 137,583.21, 189,607.74 and 107,320.60

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Solution

The fourth proportional to 137,583.21, 189,607.74 and 107,320.60 is: 147,901.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,583.21 : 189,607.74 = 107,320.60 : x
  2. Step 2: Convert to fraction form
    137,583.21/189,607.74 = 107,320.60/x
  3. Step 3: Cross multiply
    137,583.21x = 189,607.74 × 107,320.60
  4. Step 4: Simplify right side
    137,583.21x = 20,348,815,189.46
  5. Step 5: Solve for x
    x = 20,348,815,189.46/137,583.21
  6. Step 6: Final answer
    x = 147,901.88

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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.