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Finding the Fourth Proportional to 103,216.48, 142,450.12 and 57,898.88

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Solution

The fourth proportional to 103,216.48, 142,450.12 and 57,898.88 is: 79,906.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,216.48 : 142,450.12 = 57,898.88 : x
  2. Step 2: Convert to fraction form
    103,216.48/142,450.12 = 57,898.88/x
  3. Step 3: Cross multiply
    103,216.48x = 142,450.12 × 57,898.88
  4. Step 4: Simplify right side
    103,216.48x = 8,247,702,403.87
  5. Step 5: Solve for x
    x = 8,247,702,403.87/103,216.48
  6. Step 6: Final answer
    x = 79,906.84

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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.