Home / 138,224.07-190,759.19-77,800.77

Finding the Fourth Proportional to 138,224.07, 190,759.19 and 77,800.77

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Solution

The fourth proportional to 138,224.07, 190,759.19 and 77,800.77 is: 107,370.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,224.07 : 190,759.19 = 77,800.77 : x
  2. Step 2: Convert to fraction form
    138,224.07/190,759.19 = 77,800.77/x
  3. Step 3: Cross multiply
    138,224.07x = 190,759.19 × 77,800.77
  4. Step 4: Simplify right side
    138,224.07x = 14,841,211,477.57
  5. Step 5: Solve for x
    x = 14,841,211,477.57/138,224.07
  6. Step 6: Final answer
    x = 107,370.67

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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.