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Finding the Fourth Proportional to 145,100.69, 200,239.80 and 80,570.84

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Solution

The fourth proportional to 145,100.69, 200,239.80 and 80,570.84 is: 111,188.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,100.69 : 200,239.80 = 80,570.84 : x
  2. Step 2: Convert to fraction form
    145,100.69/200,239.80 = 80,570.84/x
  3. Step 3: Cross multiply
    145,100.69x = 200,239.80 × 80,570.84
  4. Step 4: Simplify right side
    145,100.69x = 16,133,488,887.43
  5. Step 5: Solve for x
    x = 16,133,488,887.43/145,100.69
  6. Step 6: Final answer
    x = 111,188.23

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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.