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Finding the Fourth Proportional to 143,487.60, 215,237.80 and 54,783.60

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Solution

The fourth proportional to 143,487.60, 215,237.80 and 54,783.60 is: 82,177.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,487.60 : 215,237.80 = 54,783.60 : x
  2. Step 2: Convert to fraction form
    143,487.60/215,237.80 = 54,783.60/x
  3. Step 3: Cross multiply
    143,487.60x = 215,237.80 × 54,783.60
  4. Step 4: Simplify right side
    143,487.60x = 11,791,501,540.08
  5. Step 5: Solve for x
    x = 11,791,501,540.08/143,487.60
  6. Step 6: Final answer
    x = 82,177.84

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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.