Home / 142,736.60-213,900.10-105,002.20

Finding the Fourth Proportional to 142,736.60, 213,900.10 and 105,002.20

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Solution

The fourth proportional to 142,736.60, 213,900.10 and 105,002.20 is: 157,352.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,736.60 : 213,900.10 = 105,002.20 : x
  2. Step 2: Convert to fraction form
    142,736.60/213,900.10 = 105,002.20/x
  3. Step 3: Cross multiply
    142,736.60x = 213,900.10 × 105,002.20
  4. Step 4: Simplify right side
    142,736.60x = 22,459,981,080.22
  5. Step 5: Solve for x
    x = 22,459,981,080.22/142,736.60
  6. Step 6: Final answer
    x = 157,352.64

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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.