Home / 143,404.14-197,889.54-79,740.56

Finding the Fourth Proportional to 143,404.14, 197,889.54 and 79,740.56

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Solution

The fourth proportional to 143,404.14, 197,889.54 and 79,740.56 is: 110,037.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,404.14 : 197,889.54 = 79,740.56 : x
  2. Step 2: Convert to fraction form
    143,404.14/197,889.54 = 79,740.56/x
  3. Step 3: Cross multiply
    143,404.14x = 197,889.54 × 79,740.56
  4. Step 4: Simplify right side
    143,404.14x = 15,779,822,737.74
  5. Step 5: Solve for x
    x = 15,779,822,737.74/143,404.14
  6. Step 6: Final answer
    x = 110,037.43

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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.