Home / 142,629.60-213,944.40-72,645.60

Finding the Fourth Proportional to 142,629.60, 213,944.40 and 72,645.60

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Solution

The fourth proportional to 142,629.60, 213,944.40 and 72,645.60 is: 108,968.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,629.60 : 213,944.40 = 72,645.60 : x
  2. Step 2: Convert to fraction form
    142,629.60/213,944.40 = 72,645.60/x
  3. Step 3: Cross multiply
    142,629.60x = 213,944.40 × 72,645.60
  4. Step 4: Simplify right side
    142,629.60x = 15,542,119,304.64
  5. Step 5: Solve for x
    x = 15,542,119,304.64/142,629.60
  6. Step 6: Final answer
    x = 108,968.40

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1.5x scale

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.