Home / 142,062.20-212,945.70-57,786.20

Finding the Fourth Proportional to 142,062.20, 212,945.70 and 57,786.20

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Solution

The fourth proportional to 142,062.20, 212,945.70 and 57,786.20 is: 86,619.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,062.20 : 212,945.70 = 57,786.20 : x
  2. Step 2: Convert to fraction form
    142,062.20/212,945.70 = 57,786.20/x
  3. Step 3: Cross multiply
    142,062.20x = 212,945.70 × 57,786.20
  4. Step 4: Simplify right side
    142,062.20x = 12,305,322,809.34
  5. Step 5: Solve for x
    x = 12,305,322,809.34/142,062.20
  6. Step 6: Final answer
    x = 86,619.26

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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.