Home / 189,538.54-284,140.26-77,312.64

Finding the Fourth Proportional to 189,538.54, 284,140.26 and 77,312.64

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Solution

The fourth proportional to 189,538.54, 284,140.26 and 77,312.64 is: 115,900.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,538.54 : 284,140.26 = 77,312.64 : x
  2. Step 2: Convert to fraction form
    189,538.54/284,140.26 = 77,312.64/x
  3. Step 3: Cross multiply
    189,538.54x = 284,140.26 × 77,312.64
  4. Step 4: Simplify right side
    189,538.54x = 21,967,633,630.89
  5. Step 5: Solve for x
    x = 21,967,633,630.89/189,538.54
  6. Step 6: Final answer
    x = 115,900.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.