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Finding the Fourth Proportional to 133,070.30, 199,605.45 and 66,520.70

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Solution

The fourth proportional to 133,070.30, 199,605.45 and 66,520.70 is: 99,781.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,070.30 : 199,605.45 = 66,520.70 : x
  2. Step 2: Convert to fraction form
    133,070.30/199,605.45 = 66,520.70/x
  3. Step 3: Cross multiply
    133,070.30x = 199,605.45 × 66,520.70
  4. Step 4: Simplify right side
    133,070.30x = 13,277,894,257.82
  5. Step 5: Solve for x
    x = 13,277,894,257.82/133,070.30
  6. Step 6: Final answer
    x = 99,781.05

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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.