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Finding the Fourth Proportional to 142,719.60, 214,014.60 and 53,943.60

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Solution

The fourth proportional to 142,719.60, 214,014.60 and 53,943.60 is: 80,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,719.60 : 214,014.60 = 53,943.60 : x
  2. Step 2: Convert to fraction form
    142,719.60/214,014.60 = 53,943.60/x
  3. Step 3: Cross multiply
    142,719.60x = 214,014.60 × 53,943.60
  4. Step 4: Simplify right side
    142,719.60x = 11,544,717,976.56
  5. Step 5: Solve for x
    x = 11,544,717,976.56/142,719.60
  6. Step 6: Final answer
    x = 80,890.91

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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.