Home / 129,173.20-178,280.44-75,458.08

Finding the Fourth Proportional to 129,173.20, 178,280.44 and 75,458.08

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Solution

The fourth proportional to 129,173.20, 178,280.44 and 75,458.08 is: 104,144.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,173.20 : 178,280.44 = 75,458.08 : x
  2. Step 2: Convert to fraction form
    129,173.20/178,280.44 = 75,458.08/x
  3. Step 3: Cross multiply
    129,173.20x = 178,280.44 × 75,458.08
  4. Step 4: Simplify right side
    129,173.20x = 13,452,699,703.96
  5. Step 5: Solve for x
    x = 13,452,699,703.96/129,173.20
  6. Step 6: Final answer
    x = 104,144.67

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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.