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Finding the Fourth Proportional to 143,825.60, 215,703.84 and 73,668.80

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Solution

The fourth proportional to 143,825.60, 215,703.84 and 73,668.80 is: 110,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,825.60 : 215,703.84 = 73,668.80 : x
  2. Step 2: Convert to fraction form
    143,825.60/215,703.84 = 73,668.80/x
  3. Step 3: Cross multiply
    143,825.60x = 215,703.84 × 73,668.80
  4. Step 4: Simplify right side
    143,825.60x = 15,890,643,048.19
  5. Step 5: Solve for x
    x = 15,890,643,048.19/143,825.60
  6. Step 6: Final answer
    x = 110,485.50

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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.