Home / 142,775.10-214,065.45-54,015.30

Finding the Fourth Proportional to 142,775.10, 214,065.45 and 54,015.30

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Solution

The fourth proportional to 142,775.10, 214,065.45 and 54,015.30 is: 80,986.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,775.10 : 214,065.45 = 54,015.30 : x
  2. Step 2: Convert to fraction form
    142,775.10/214,065.45 = 54,015.30/x
  3. Step 3: Cross multiply
    142,775.10x = 214,065.45 × 54,015.30
  4. Step 4: Simplify right side
    142,775.10x = 11,562,809,501.39
  5. Step 5: Solve for x
    x = 11,562,809,501.39/142,775.10
  6. Step 6: Final answer
    x = 80,986.18

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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.