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Finding the Fourth Proportional to 145,346.56, 200,571.80 and 84,922.80

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Solution

The fourth proportional to 145,346.56, 200,571.80 and 84,922.80 is: 117,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,346.56 : 200,571.80 = 84,922.80 : x
  2. Step 2: Convert to fraction form
    145,346.56/200,571.80 = 84,922.80/x
  3. Step 3: Cross multiply
    145,346.56x = 200,571.80 × 84,922.80
  4. Step 4: Simplify right side
    145,346.56x = 17,033,118,857.04
  5. Step 5: Solve for x
    x = 17,033,118,857.04/145,346.56
  6. Step 6: Final answer
    x = 117,189.69

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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.