Home / 107,804.73-161,510.05-78,149.01

Finding the Fourth Proportional to 107,804.73, 161,510.05 and 78,149.01

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Solution

The fourth proportional to 107,804.73, 161,510.05 and 78,149.01 is: 117,080.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,804.73 : 161,510.05 = 78,149.01 : x
  2. Step 2: Convert to fraction form
    107,804.73/161,510.05 = 78,149.01/x
  3. Step 3: Cross multiply
    107,804.73x = 161,510.05 × 78,149.01
  4. Step 4: Simplify right side
    107,804.73x = 12,621,850,512.55
  5. Step 5: Solve for x
    x = 12,621,850,512.55/107,804.73
  6. Step 6: Final answer
    x = 117,080.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.