Home / 154,355.52-213,004.80-87,288.96

Finding the Fourth Proportional to 154,355.52, 213,004.80 and 87,288.96

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Solution

The fourth proportional to 154,355.52, 213,004.80 and 87,288.96 is: 120,455.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,355.52 : 213,004.80 = 87,288.96 : x
  2. Step 2: Convert to fraction form
    154,355.52/213,004.80 = 87,288.96/x
  3. Step 3: Cross multiply
    154,355.52x = 213,004.80 × 87,288.96
  4. Step 4: Simplify right side
    154,355.52x = 18,592,967,467.01
  5. Step 5: Solve for x
    x = 18,592,967,467.01/154,355.52
  6. Step 6: Final answer
    x = 120,455.47

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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.