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Finding the Fourth Proportional to 161,881.40, 243,113.70 and 156,632.60

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Solution

The fourth proportional to 161,881.40, 243,113.70 and 156,632.60 is: 235,231.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,881.40 : 243,113.70 = 156,632.60 : x
  2. Step 2: Convert to fraction form
    161,881.40/243,113.70 = 156,632.60/x
  3. Step 3: Cross multiply
    161,881.40x = 243,113.70 × 156,632.60
  4. Step 4: Simplify right side
    161,881.40x = 38,079,530,926.62
  5. Step 5: Solve for x
    x = 38,079,530,926.62/161,881.40
  6. Step 6: Final answer
    x = 235,231.05

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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.