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Finding the Fourth Proportional to 109,398.96, 150,968.48 and 61,651.35

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Solution

The fourth proportional to 109,398.96, 150,968.48 and 61,651.35 is: 85,077.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,398.96 : 150,968.48 = 61,651.35 : x
  2. Step 2: Convert to fraction form
    109,398.96/150,968.48 = 61,651.35/x
  3. Step 3: Cross multiply
    109,398.96x = 150,968.48 × 61,651.35
  4. Step 4: Simplify right side
    109,398.96x = 9,307,410,291.19
  5. Step 5: Solve for x
    x = 9,307,410,291.19/109,398.96
  6. Step 6: Final answer
    x = 85,077.69

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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.