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Finding the Fourth Proportional to 162,656.20, 243,984.30 and 57,485.80

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Solution

The fourth proportional to 162,656.20, 243,984.30 and 57,485.80 is: 86,228.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,656.20 : 243,984.30 = 57,485.80 : x
  2. Step 2: Convert to fraction form
    162,656.20/243,984.30 = 57,485.80/x
  3. Step 3: Cross multiply
    162,656.20x = 243,984.30 × 57,485.80
  4. Step 4: Simplify right side
    162,656.20x = 14,025,632,672.94
  5. Step 5: Solve for x
    x = 14,025,632,672.94/162,656.20
  6. Step 6: Final answer
    x = 86,228.70

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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.