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Finding the Fourth Proportional to 142,477.80, 213,716.70 and 140,404.20

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Solution

The fourth proportional to 142,477.80, 213,716.70 and 140,404.20 is: 210,606.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,477.80 : 213,716.70 = 140,404.20 : x
  2. Step 2: Convert to fraction form
    142,477.80/213,716.70 = 140,404.20/x
  3. Step 3: Cross multiply
    142,477.80x = 213,716.70 × 140,404.20
  4. Step 4: Simplify right side
    142,477.80x = 30,006,722,290.14
  5. Step 5: Solve for x
    x = 30,006,722,290.14/142,477.80
  6. Step 6: Final answer
    x = 210,606.30

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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.