Home / 140,509.72-193,900.70-76,847.32

Finding the Fourth Proportional to 140,509.72, 193,900.70 and 76,847.32

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Solution

The fourth proportional to 140,509.72, 193,900.70 and 76,847.32 is: 106,047.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,509.72 : 193,900.70 = 76,847.32 : x
  2. Step 2: Convert to fraction form
    140,509.72/193,900.70 = 76,847.32/x
  3. Step 3: Cross multiply
    140,509.72x = 193,900.70 × 76,847.32
  4. Step 4: Simplify right side
    140,509.72x = 14,900,749,141.12
  5. Step 5: Solve for x
    x = 14,900,749,141.12/140,509.72
  6. Step 6: Final answer
    x = 106,047.82

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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.