Home / 109,665.12-151,336.54-61,920.48

Finding the Fourth Proportional to 109,665.12, 151,336.54 and 61,920.48

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Solution

The fourth proportional to 109,665.12, 151,336.54 and 61,920.48 is: 85,449.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,665.12 : 151,336.54 = 61,920.48 : x
  2. Step 2: Convert to fraction form
    109,665.12/151,336.54 = 61,920.48/x
  3. Step 3: Cross multiply
    109,665.12x = 151,336.54 × 61,920.48
  4. Step 4: Simplify right side
    109,665.12x = 9,370,831,198.34
  5. Step 5: Solve for x
    x = 9,370,831,198.34/109,665.12
  6. Step 6: Final answer
    x = 85,449.51

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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.