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Finding the Fourth Proportional to 173,690.91, 239,647.90 and 100,085.24

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Solution

The fourth proportional to 173,690.91, 239,647.90 and 100,085.24 is: 138,091.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,690.91 : 239,647.90 = 100,085.24 : x
  2. Step 2: Convert to fraction form
    173,690.91/239,647.90 = 100,085.24/x
  3. Step 3: Cross multiply
    173,690.91x = 239,647.90 × 100,085.24
  4. Step 4: Simplify right side
    173,690.91x = 23,985,216,628.35
  5. Step 5: Solve for x
    x = 23,985,216,628.35/173,690.91
  6. Step 6: Final answer
    x = 138,091.37

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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.