Home / 111,907.28-154,431.24-61,605.20

Finding the Fourth Proportional to 111,907.28, 154,431.24 and 61,605.20

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Solution

The fourth proportional to 111,907.28, 154,431.24 and 61,605.20 is: 85,014.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,907.28 : 154,431.24 = 61,605.20 : x
  2. Step 2: Convert to fraction form
    111,907.28/154,431.24 = 61,605.20/x
  3. Step 3: Cross multiply
    111,907.28x = 154,431.24 × 61,605.20
  4. Step 4: Simplify right side
    111,907.28x = 9,513,767,426.45
  5. Step 5: Solve for x
    x = 9,513,767,426.45/111,907.28
  6. Step 6: Final answer
    x = 85,014.73

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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.