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Finding the Fourth Proportional to 155,172.40, 232,758.60 and 84,313.60

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Solution

The fourth proportional to 155,172.40, 232,758.60 and 84,313.60 is: 126,470.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,172.40 : 232,758.60 = 84,313.60 : x
  2. Step 2: Convert to fraction form
    155,172.40/232,758.60 = 84,313.60/x
  3. Step 3: Cross multiply
    155,172.40x = 232,758.60 × 84,313.60
  4. Step 4: Simplify right side
    155,172.40x = 19,624,715,496.96
  5. Step 5: Solve for x
    x = 19,624,715,496.96/155,172.40
  6. Step 6: Final answer
    x = 126,470.40

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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.