Home / 160,743.72-221,816.64-89,119.44

Finding the Fourth Proportional to 160,743.72, 221,816.64 and 89,119.44

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Solution

The fourth proportional to 160,743.72, 221,816.64 and 89,119.44 is: 122,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,743.72 : 221,816.64 = 89,119.44 : x
  2. Step 2: Convert to fraction form
    160,743.72/221,816.64 = 89,119.44/x
  3. Step 3: Cross multiply
    160,743.72x = 221,816.64 × 89,119.44
  4. Step 4: Simplify right side
    160,743.72x = 19,768,174,739.48
  5. Step 5: Solve for x
    x = 19,768,174,739.48/160,743.72
  6. Step 6: Final answer
    x = 122,979.45

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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.