Home / 143,404.17-197,889.63-79,740.60

Finding the Fourth Proportional to 143,404.17, 197,889.63 and 79,740.60

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Solution

The fourth proportional to 143,404.17, 197,889.63 and 79,740.60 is: 110,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,404.17 : 197,889.63 = 79,740.60 : x
  2. Step 2: Convert to fraction form
    143,404.17/197,889.63 = 79,740.60/x
  3. Step 3: Cross multiply
    143,404.17x = 197,889.63 × 79,740.60
  4. Step 4: Simplify right side
    143,404.17x = 15,779,837,829.98
  5. Step 5: Solve for x
    x = 15,779,837,829.98/143,404.17
  6. Step 6: Final answer
    x = 110,037.51

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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.