Home / 129,279,958.38-178,410,648.87-70,545,846.29

Finding the Fourth Proportional to 129,279,958.38, 178,410,648.87 and 70,545,846.29

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Solution

The fourth proportional to 129,279,958.38, 178,410,648.87 and 70,545,846.29 is: 97,355,617.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,279,958.38 : 178,410,648.87 = 70,545,846.29 : x
  2. Step 2: Convert to fraction form
    129,279,958.38/178,410,648.87 = 70,545,846.29/x
  3. Step 3: Cross multiply
    129,279,958.38x = 178,410,648.87 × 70,545,846.29
  4. Step 4: Simplify right side
    129,279,958.38x = 12,586,130,210,790,128
  5. Step 5: Solve for x
    x = 12,586,130,210,790,128/129,279,958.38
  6. Step 6: Final answer
    x = 97,355,617.75

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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.