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Finding the Fourth Proportional to 143,404.03, 197,897.73 and 79,740.46

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Solution

The fourth proportional to 143,404.03, 197,897.73 and 79,740.46 is: 110,041.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,404.03 : 197,897.73 = 79,740.46 : x
  2. Step 2: Convert to fraction form
    143,404.03/197,897.73 = 79,740.46/x
  3. Step 3: Cross multiply
    143,404.03x = 197,897.73 × 79,740.46
  4. Step 4: Simplify right side
    143,404.03x = 15,780,455,823.80
  5. Step 5: Solve for x
    x = 15,780,455,823.80/143,404.03
  6. Step 6: Final answer
    x = 110,041.93

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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.