Home / 109,203.89-150,663.71-66,197.21

Finding the Fourth Proportional to 109,203.89, 150,663.71 and 66,197.21

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Solution

The fourth proportional to 109,203.89, 150,663.71 and 66,197.21 is: 91,329.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,203.89 : 150,663.71 = 66,197.21 : x
  2. Step 2: Convert to fraction form
    109,203.89/150,663.71 = 66,197.21/x
  3. Step 3: Cross multiply
    109,203.89x = 150,663.71 × 66,197.21
  4. Step 4: Simplify right side
    109,203.89x = 9,973,516,662.42
  5. Step 5: Solve for x
    x = 9,973,516,662.42/109,203.89
  6. Step 6: Final answer
    x = 91,329.32

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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.