Home / 143,140.24-197,543.40-79,485.04

Finding the Fourth Proportional to 143,140.24, 197,543.40 and 79,485.04

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Solution

The fourth proportional to 143,140.24, 197,543.40 and 79,485.04 is: 109,694.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,140.24 : 197,543.40 = 79,485.04 : x
  2. Step 2: Convert to fraction form
    143,140.24/197,543.40 = 79,485.04/x
  3. Step 3: Cross multiply
    143,140.24x = 197,543.40 × 79,485.04
  4. Step 4: Simplify right side
    143,140.24x = 15,701,745,050.74
  5. Step 5: Solve for x
    x = 15,701,745,050.74/143,140.24
  6. Step 6: Final answer
    x = 109,694.84

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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.