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Finding the Fourth Proportional to 133,211.51, 199,645.03 and 99,668.40

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Solution

The fourth proportional to 133,211.51, 199,645.03 and 99,668.40 is: 149,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,211.51 : 199,645.03 = 99,668.40 : x
  2. Step 2: Convert to fraction form
    133,211.51/199,645.03 = 99,668.40/x
  3. Step 3: Cross multiply
    133,211.51x = 199,645.03 × 99,668.40
  4. Step 4: Simplify right side
    133,211.51x = 19,898,300,458.88
  5. Step 5: Solve for x
    x = 19,898,300,458.88/133,211.51
  6. Step 6: Final answer
    x = 149,373.73

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1.5x scale

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.