Home / 123,719.40-185,579.10-57,137.40

Finding the Fourth Proportional to 123,719.40, 185,579.10 and 57,137.40

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Solution

The fourth proportional to 123,719.40, 185,579.10 and 57,137.40 is: 85,706.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,719.40 : 185,579.10 = 57,137.40 : x
  2. Step 2: Convert to fraction form
    123,719.40/185,579.10 = 57,137.40/x
  3. Step 3: Cross multiply
    123,719.40x = 185,579.10 × 57,137.40
  4. Step 4: Simplify right side
    123,719.40x = 10,603,507,268.34
  5. Step 5: Solve for x
    x = 10,603,507,268.34/123,719.40
  6. Step 6: Final answer
    x = 85,706.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.