Home / 154,747.36-213,552-87,679.36

Finding the Fourth Proportional to 154,747.36, 213,552 and 87,679.36

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Solution

The fourth proportional to 154,747.36, 213,552 and 87,679.36 is: 120,997.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,747.36 : 213,552 = 87,679.36 : x
  2. Step 2: Convert to fraction form
    154,747.36/213,552 = 87,679.36/x
  3. Step 3: Cross multiply
    154,747.36x = 213,552 × 87,679.36
  4. Step 4: Simplify right side
    154,747.36x = 18,724,102,686.72
  5. Step 5: Solve for x
    x = 18,724,102,686.72/154,747.36
  6. Step 6: Final answer
    x = 120,997.88

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1.5x scale

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.