Home / 154,622.24-213,372.72-87,554.40

Finding the Fourth Proportional to 154,622.24, 213,372.72 and 87,554.40

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Solution

The fourth proportional to 154,622.24, 213,372.72 and 87,554.40 is: 120,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,622.24 : 213,372.72 = 87,554.40 : x
  2. Step 2: Convert to fraction form
    154,622.24/213,372.72 = 87,554.40/x
  3. Step 3: Cross multiply
    154,622.24x = 213,372.72 × 87,554.40
  4. Step 4: Simplify right side
    154,622.24x = 18,681,720,475.97
  5. Step 5: Solve for x
    x = 18,681,720,475.97/154,622.24
  6. Step 6: Final answer
    x = 120,821.69

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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.