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Finding the Fourth Proportional to 176,185.92, 243,128.80 and 100,739.36

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Solution

The fourth proportional to 176,185.92, 243,128.80 and 100,739.36 is: 139,015.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,185.92 : 243,128.80 = 100,739.36 : x
  2. Step 2: Convert to fraction form
    176,185.92/243,128.80 = 100,739.36/x
  3. Step 3: Cross multiply
    176,185.92x = 243,128.80 × 100,739.36
  4. Step 4: Simplify right side
    176,185.92x = 24,492,639,709.57
  5. Step 5: Solve for x
    x = 24,492,639,709.57/176,185.92
  6. Step 6: Final answer
    x = 139,015.87

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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.