Home / 143,718.09-198,337.10-80,055.87

Finding the Fourth Proportional to 143,718.09, 198,337.10 and 80,055.87

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Solution

The fourth proportional to 143,718.09, 198,337.10 and 80,055.87 is: 110,480.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,718.09 : 198,337.10 = 80,055.87 : x
  2. Step 2: Convert to fraction form
    143,718.09/198,337.10 = 80,055.87/x
  3. Step 3: Cross multiply
    143,718.09x = 198,337.10 × 80,055.87
  4. Step 4: Simplify right side
    143,718.09x = 15,878,048,693.50
  5. Step 5: Solve for x
    x = 15,878,048,693.50/143,718.09
  6. Step 6: Final answer
    x = 110,480.52

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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.