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Finding the Fourth Proportional to 133,070.69, 199,640.60 and 66,508.13

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Solution

The fourth proportional to 133,070.69, 199,640.60 and 66,508.13 is: 99,779.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,070.69 : 199,640.60 = 66,508.13 : x
  2. Step 2: Convert to fraction form
    133,070.69/199,640.60 = 66,508.13/x
  3. Step 3: Cross multiply
    133,070.69x = 199,640.60 × 66,508.13
  4. Step 4: Simplify right side
    133,070.69x = 13,277,722,978.08
  5. Step 5: Solve for x
    x = 13,277,722,978.08/133,070.69
  6. Step 6: Final answer
    x = 99,779.47

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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.