Home / 129,090,080.76-178,139,112.18-70,351,481.67

Finding the Fourth Proportional to 129,090,080.76, 178,139,112.18 and 70,351,481.67

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Solution

The fourth proportional to 129,090,080.76, 178,139,112.18 and 70,351,481.67 is: 97,082,211.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,090,080.76 : 178,139,112.18 = 70,351,481.67 : x
  2. Step 2: Convert to fraction form
    129,090,080.76/178,139,112.18 = 70,351,481.67/x
  3. Step 3: Cross multiply
    129,090,080.76x = 178,139,112.18 × 70,351,481.67
  4. Step 4: Simplify right side
    129,090,080.76x = 12,532,350,485,241,344
  5. Step 5: Solve for x
    x = 12,532,350,485,241,344/129,090,080.76
  6. Step 6: Final answer
    x = 97,082,211.21

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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.