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Finding the Fourth Proportional to 133,622.96, 183,980.04 and 113,438

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Solution

The fourth proportional to 133,622.96, 183,980.04 and 113,438 is: 156,188.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,622.96 : 183,980.04 = 113,438 : x
  2. Step 2: Convert to fraction form
    133,622.96/183,980.04 = 113,438/x
  3. Step 3: Cross multiply
    133,622.96x = 183,980.04 × 113,438
  4. Step 4: Simplify right side
    133,622.96x = 20,870,327,777.52
  5. Step 5: Solve for x
    x = 20,870,327,777.52/133,622.96
  6. Step 6: Final answer
    x = 156,188.19

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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.