Home / 142,319.70-213,315.21-53,516.57

Finding the Fourth Proportional to 142,319.70, 213,315.21 and 53,516.57

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Solution

The fourth proportional to 142,319.70, 213,315.21 and 53,516.57 is: 80,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,319.70 : 213,315.21 = 53,516.57 : x
  2. Step 2: Convert to fraction form
    142,319.70/213,315.21 = 53,516.57/x
  3. Step 3: Cross multiply
    142,319.70x = 213,315.21 × 53,516.57
  4. Step 4: Simplify right side
    142,319.70x = 11,415,897,301.45
  5. Step 5: Solve for x
    x = 11,415,897,301.45/142,319.70
  6. Step 6: Final answer
    x = 80,213.05

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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.