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Finding the Fourth Proportional to 142,473.40, 213,710.10 and 136,406.20

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Solution

The fourth proportional to 142,473.40, 213,710.10 and 136,406.20 is: 204,609.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,473.40 : 213,710.10 = 136,406.20 : x
  2. Step 2: Convert to fraction form
    142,473.40/213,710.10 = 136,406.20/x
  3. Step 3: Cross multiply
    142,473.40x = 213,710.10 × 136,406.20
  4. Step 4: Simplify right side
    142,473.40x = 29,151,382,642.62
  5. Step 5: Solve for x
    x = 29,151,382,642.62/142,473.40
  6. Step 6: Final answer
    x = 204,609.30

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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.