Home / 142,401.10-213,310.05-72,319.90

Finding the Fourth Proportional to 142,401.10, 213,310.05 and 72,319.90

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Solution

The fourth proportional to 142,401.10, 213,310.05 and 72,319.90 is: 108,331.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,401.10 : 213,310.05 = 72,319.90 : x
  2. Step 2: Convert to fraction form
    142,401.10/213,310.05 = 72,319.90/x
  3. Step 3: Cross multiply
    142,401.10x = 213,310.05 × 72,319.90
  4. Step 4: Simplify right side
    142,401.10x = 15,426,561,485.00
  5. Step 5: Solve for x
    x = 15,426,561,485.00/142,401.10
  6. Step 6: Final answer
    x = 108,331.76

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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.