Home / 109,724.16-151,416.64-61,976

Finding the Fourth Proportional to 109,724.16, 151,416.64 and 61,976

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Solution

The fourth proportional to 109,724.16, 151,416.64 and 61,976 is: 85,525.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,724.16 : 151,416.64 = 61,976 : x
  2. Step 2: Convert to fraction form
    109,724.16/151,416.64 = 61,976/x
  3. Step 3: Cross multiply
    109,724.16x = 151,416.64 × 61,976
  4. Step 4: Simplify right side
    109,724.16x = 9,384,197,680.64
  5. Step 5: Solve for x
    x = 9,384,197,680.64/109,724.16
  6. Step 6: Final answer
    x = 85,525.35

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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.