Home / 142,780.33-197,036.84-79,118.13

Finding the Fourth Proportional to 142,780.33, 197,036.84 and 79,118.13

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Solution

The fourth proportional to 142,780.33, 197,036.84 and 79,118.13 is: 109,183.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,780.33 : 197,036.84 = 79,118.13 : x
  2. Step 2: Convert to fraction form
    142,780.33/197,036.84 = 79,118.13/x
  3. Step 3: Cross multiply
    142,780.33x = 197,036.84 × 79,118.13
  4. Step 4: Simplify right side
    142,780.33x = 15,589,186,150.26
  5. Step 5: Solve for x
    x = 15,589,186,150.26/142,780.33
  6. Step 6: Final answer
    x = 109,183.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.