Home / 142,817.12-197,080.50-79,154.36

Finding the Fourth Proportional to 142,817.12, 197,080.50 and 79,154.36

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Solution

The fourth proportional to 142,817.12, 197,080.50 and 79,154.36 is: 109,229.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,817.12 : 197,080.50 = 79,154.36 : x
  2. Step 2: Convert to fraction form
    142,817.12/197,080.50 = 79,154.36/x
  3. Step 3: Cross multiply
    142,817.12x = 197,080.50 × 79,154.36
  4. Step 4: Simplify right side
    142,817.12x = 15,599,780,845.98
  5. Step 5: Solve for x
    x = 15,599,780,845.98/142,817.12
  6. Step 6: Final answer
    x = 109,229.07

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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.