Home / 189,931.37-284,791.87-77,690.40

Finding the Fourth Proportional to 189,931.37, 284,791.87 and 77,690.40

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Solution

The fourth proportional to 189,931.37, 284,791.87 and 77,690.40 is: 116,492.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,931.37 : 284,791.87 = 77,690.40 : x
  2. Step 2: Convert to fraction form
    189,931.37/284,791.87 = 77,690.40/x
  3. Step 3: Cross multiply
    189,931.37x = 284,791.87 × 77,690.40
  4. Step 4: Simplify right side
    189,931.37x = 22,125,594,102.82
  5. Step 5: Solve for x
    x = 22,125,594,102.82/189,931.37
  6. Step 6: Final answer
    x = 116,492.58

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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.