Home / 131,829.07-181,932.48-78,102.67

Finding the Fourth Proportional to 131,829.07, 181,932.48 and 78,102.67

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Solution

The fourth proportional to 131,829.07, 181,932.48 and 78,102.67 is: 107,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,829.07 : 181,932.48 = 78,102.67 : x
  2. Step 2: Convert to fraction form
    131,829.07/181,932.48 = 78,102.67/x
  3. Step 3: Cross multiply
    131,829.07x = 181,932.48 × 78,102.67
  4. Step 4: Simplify right side
    131,829.07x = 14,209,412,447.72
  5. Step 5: Solve for x
    x = 14,209,412,447.72/131,829.07
  6. Step 6: Final answer
    x = 107,786.64

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1.5x scale

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.