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Finding the Fourth Proportional to 156,989.55, 235,484.33 and 143,211.45

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Solution

The fourth proportional to 156,989.55, 235,484.33 and 143,211.45 is: 214,817.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,989.55 : 235,484.33 = 143,211.45 : x
  2. Step 2: Convert to fraction form
    156,989.55/235,484.33 = 143,211.45/x
  3. Step 3: Cross multiply
    156,989.55x = 235,484.33 × 143,211.45
  4. Step 4: Simplify right side
    156,989.55x = 33,724,052,351.58
  5. Step 5: Solve for x
    x = 33,724,052,351.58/156,989.55
  6. Step 6: Final answer
    x = 214,817.18

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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.