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Finding the Fourth Proportional to 151,950.43, 209,704.21 and 83,980.67

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Solution

The fourth proportional to 151,950.43, 209,704.21 and 83,980.67 is: 115,900.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,950.43 : 209,704.21 = 83,980.67 : x
  2. Step 2: Convert to fraction form
    151,950.43/209,704.21 = 83,980.67/x
  3. Step 3: Cross multiply
    151,950.43x = 209,704.21 × 83,980.67
  4. Step 4: Simplify right side
    151,950.43x = 17,611,099,009.10
  5. Step 5: Solve for x
    x = 17,611,099,009.10/151,950.43
  6. Step 6: Final answer
    x = 115,900.29

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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.