Home / 143,742.40-216,002.40-126,635.20

Finding the Fourth Proportional to 143,742.40, 216,002.40 and 126,635.20

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Solution

The fourth proportional to 143,742.40, 216,002.40 and 126,635.20 is: 190,295.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,742.40 : 216,002.40 = 126,635.20 : x
  2. Step 2: Convert to fraction form
    143,742.40/216,002.40 = 126,635.20/x
  3. Step 3: Cross multiply
    143,742.40x = 216,002.40 × 126,635.20
  4. Step 4: Simplify right side
    143,742.40x = 27,353,507,124.48
  5. Step 5: Solve for x
    x = 27,353,507,124.48/143,742.40
  6. Step 6: Final answer
    x = 190,295.33

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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.