Home / 142,780.97-197,038.91-79,119.83

Finding the Fourth Proportional to 142,780.97, 197,038.91 and 79,119.83

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Solution

The fourth proportional to 142,780.97, 197,038.91 and 79,119.83 is: 109,186.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,780.97 : 197,038.91 = 79,119.83 : x
  2. Step 2: Convert to fraction form
    142,780.97/197,038.91 = 79,119.83/x
  3. Step 3: Cross multiply
    142,780.97x = 197,038.91 × 79,119.83
  4. Step 4: Simplify right side
    142,780.97x = 15,589,684,666.99
  5. Step 5: Solve for x
    x = 15,589,684,666.99/142,780.97
  6. Step 6: Final answer
    x = 109,186.01

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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.