Home / 128,405,442.63-192,567,704.37-42,123,743.67

Finding the Fourth Proportional to 128,405,442.63, 192,567,704.37 and 42,123,743.67

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Solution

The fourth proportional to 128,405,442.63, 192,567,704.37 and 42,123,743.67 is: 63,172,342.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,405,442.63 : 192,567,704.37 = 42,123,743.67 : x
  2. Step 2: Convert to fraction form
    128,405,442.63/192,567,704.37 = 42,123,743.67/x
  3. Step 3: Cross multiply
    128,405,442.63x = 192,567,704.37 × 42,123,743.67
  4. Step 4: Simplify right side
    128,405,442.63x = 8,111,672,617,039,380
  5. Step 5: Solve for x
    x = 8,111,672,617,039,380/128,405,442.63
  6. Step 6: Final answer
    x = 63,172,342.63

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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.