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Finding the Fourth Proportional to 128,559.66, 177,353.42 and 83,252.24

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Solution

The fourth proportional to 128,559.66, 177,353.42 and 83,252.24 is: 114,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,559.66 : 177,353.42 = 83,252.24 : x
  2. Step 2: Convert to fraction form
    128,559.66/177,353.42 = 83,252.24/x
  3. Step 3: Cross multiply
    128,559.66x = 177,353.42 × 83,252.24
  4. Step 4: Simplify right side
    128,559.66x = 14,765,068,183.63
  5. Step 5: Solve for x
    x = 14,765,068,183.63/128,559.66
  6. Step 6: Final answer
    x = 114,849.93

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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.