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Finding the Fourth Proportional to 159,154.90, 219,623.05 and 91,172.14

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Solution

The fourth proportional to 159,154.90, 219,623.05 and 91,172.14 is: 125,811.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,154.90 : 219,623.05 = 91,172.14 : x
  2. Step 2: Convert to fraction form
    159,154.90/219,623.05 = 91,172.14/x
  3. Step 3: Cross multiply
    159,154.90x = 219,623.05 × 91,172.14
  4. Step 4: Simplify right side
    159,154.90x = 20,023,503,461.83
  5. Step 5: Solve for x
    x = 20,023,503,461.83/159,154.90
  6. Step 6: Final answer
    x = 125,811.42

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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.