Home / 142,395.10-213,301.05-72,313.90

Finding the Fourth Proportional to 142,395.10, 213,301.05 and 72,313.90

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Solution

The fourth proportional to 142,395.10, 213,301.05 and 72,313.90 is: 108,322.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,395.10 : 213,301.05 = 72,313.90 : x
  2. Step 2: Convert to fraction form
    142,395.10/213,301.05 = 72,313.90/x
  3. Step 3: Cross multiply
    142,395.10x = 213,301.05 × 72,313.90
  4. Step 4: Simplify right side
    142,395.10x = 15,424,630,799.60
  5. Step 5: Solve for x
    x = 15,424,630,799.60/142,395.10
  6. Step 6: Final answer
    x = 108,322.76

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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.