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Finding the Fourth Proportional to 159,168.50, 219,683.73 and 91,231.01

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Solution

The fourth proportional to 159,168.50, 219,683.73 and 91,231.01 is: 125,916.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,168.50 : 219,683.73 = 91,231.01 : x
  2. Step 2: Convert to fraction form
    159,168.50/219,683.73 = 91,231.01/x
  3. Step 3: Cross multiply
    159,168.50x = 219,683.73 × 91,231.01
  4. Step 4: Simplify right side
    159,168.50x = 20,041,968,112.31
  5. Step 5: Solve for x
    x = 20,041,968,112.31/159,168.50
  6. Step 6: Final answer
    x = 125,916.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.