Home / 143,056.12-197,416.02-79,392.28

Finding the Fourth Proportional to 143,056.12, 197,416.02 and 79,392.28

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Solution

The fourth proportional to 143,056.12, 197,416.02 and 79,392.28 is: 109,560.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,056.12 : 197,416.02 = 79,392.28 : x
  2. Step 2: Convert to fraction form
    143,056.12/197,416.02 = 79,392.28/x
  3. Step 3: Cross multiply
    143,056.12x = 197,416.02 × 79,392.28
  4. Step 4: Simplify right side
    143,056.12x = 15,673,307,936.33
  5. Step 5: Solve for x
    x = 15,673,307,936.33/143,056.12
  6. Step 6: Final answer
    x = 109,560.56

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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.