Home / 134,501.21-185,604.56-77,137.57

Finding the Fourth Proportional to 134,501.21, 185,604.56 and 77,137.57

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Solution

The fourth proportional to 134,501.21, 185,604.56 and 77,137.57 is: 106,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,501.21 : 185,604.56 = 77,137.57 : x
  2. Step 2: Convert to fraction form
    134,501.21/185,604.56 = 77,137.57/x
  3. Step 3: Cross multiply
    134,501.21x = 185,604.56 × 77,137.57
  4. Step 4: Simplify right side
    134,501.21x = 14,317,083,889.62
  5. Step 5: Solve for x
    x = 14,317,083,889.62/134,501.21
  6. Step 6: Final answer
    x = 106,445.77

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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.