Home / 142,749.60-213,919.60-105,015.20

Finding the Fourth Proportional to 142,749.60, 213,919.60 and 105,015.20

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Solution

The fourth proportional to 142,749.60, 213,919.60 and 105,015.20 is: 157,372.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,749.60 : 213,919.60 = 105,015.20 : x
  2. Step 2: Convert to fraction form
    142,749.60/213,919.60 = 105,015.20/x
  3. Step 3: Cross multiply
    142,749.60x = 213,919.60 × 105,015.20
  4. Step 4: Simplify right side
    142,749.60x = 22,464,809,577.92
  5. Step 5: Solve for x
    x = 22,464,809,577.92/142,749.60
  6. Step 6: Final answer
    x = 157,372.14

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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.