Home / 142,128.64-213,121.56-47,325.31

Finding the Fourth Proportional to 142,128.64, 213,121.56 and 47,325.31

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Solution

The fourth proportional to 142,128.64, 213,121.56 and 47,325.31 is: 70,964.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,128.64 : 213,121.56 = 47,325.31 : x
  2. Step 2: Convert to fraction form
    142,128.64/213,121.56 = 47,325.31/x
  3. Step 3: Cross multiply
    142,128.64x = 213,121.56 × 47,325.31
  4. Step 4: Simplify right side
    142,128.64x = 10,086,043,894.68
  5. Step 5: Solve for x
    x = 10,086,043,894.68/142,128.64
  6. Step 6: Final answer
    x = 70,964.19

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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.