Home / 134,507.03-185,612.58-77,143.37

Finding the Fourth Proportional to 134,507.03, 185,612.58 and 77,143.37

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Solution

The fourth proportional to 134,507.03, 185,612.58 and 77,143.37 is: 106,453.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,507.03 : 185,612.58 = 77,143.37 : x
  2. Step 2: Convert to fraction form
    134,507.03/185,612.58 = 77,143.37/x
  3. Step 3: Cross multiply
    134,507.03x = 185,612.58 × 77,143.37
  4. Step 4: Simplify right side
    134,507.03x = 14,318,779,007.53
  5. Step 5: Solve for x
    x = 14,318,779,007.53/134,507.03
  6. Step 6: Final answer
    x = 106,453.76

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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.