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Finding the Fourth Proportional to 104,939.60, 157,409.40 and 100,857.20

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Solution

The fourth proportional to 104,939.60, 157,409.40 and 100,857.20 is: 151,285.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,939.60 : 157,409.40 = 100,857.20 : x
  2. Step 2: Convert to fraction form
    104,939.60/157,409.40 = 100,857.20/x
  3. Step 3: Cross multiply
    104,939.60x = 157,409.40 × 100,857.20
  4. Step 4: Simplify right side
    104,939.60x = 15,875,871,337.68
  5. Step 5: Solve for x
    x = 15,875,871,337.68/104,939.60
  6. Step 6: Final answer
    x = 151,285.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.