Home / 143,059.36-197,412.72-79,397.20

Finding the Fourth Proportional to 143,059.36, 197,412.72 and 79,397.20

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Solution

The fourth proportional to 143,059.36, 197,412.72 and 79,397.20 is: 109,563.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,059.36 : 197,412.72 = 79,397.20 : x
  2. Step 2: Convert to fraction form
    143,059.36/197,412.72 = 79,397.20/x
  3. Step 3: Cross multiply
    143,059.36x = 197,412.72 × 79,397.20
  4. Step 4: Simplify right side
    143,059.36x = 15,674,017,212.38
  5. Step 5: Solve for x
    x = 15,674,017,212.38/143,059.36
  6. Step 6: Final answer
    x = 109,563.03

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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.