Home / 129,300.55-178,393.22-78,296.98

Finding the Fourth Proportional to 129,300.55, 178,393.22 and 78,296.98

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Solution

The fourth proportional to 129,300.55, 178,393.22 and 78,296.98 is: 108,024.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,300.55 : 178,393.22 = 78,296.98 : x
  2. Step 2: Convert to fraction form
    129,300.55/178,393.22 = 78,296.98/x
  3. Step 3: Cross multiply
    129,300.55x = 178,393.22 × 78,296.98
  4. Step 4: Simplify right side
    129,300.55x = 13,967,649,486.51
  5. Step 5: Solve for x
    x = 13,967,649,486.51/129,300.55
  6. Step 6: Final answer
    x = 108,024.67

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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.