Home / 102,563.38-153,339.31-86,942.73

Finding the Fourth Proportional to 102,563.38, 153,339.31 and 86,942.73

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Solution

The fourth proportional to 102,563.38, 153,339.31 and 86,942.73 is: 129,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,563.38 : 153,339.31 = 86,942.73 : x
  2. Step 2: Convert to fraction form
    102,563.38/153,339.31 = 86,942.73/x
  3. Step 3: Cross multiply
    102,563.38x = 153,339.31 × 86,942.73
  4. Step 4: Simplify right side
    102,563.38x = 13,331,738,911.42
  5. Step 5: Solve for x
    x = 13,331,738,911.42/102,563.38
  6. Step 6: Final answer
    x = 129,985.37

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1.5x scale

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.