Home / 190,123.95-285,077.94-77,672.51

Finding the Fourth Proportional to 190,123.95, 285,077.94 and 77,672.51

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Solution

The fourth proportional to 190,123.95, 285,077.94 and 77,672.51 is: 116,464.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,123.95 : 285,077.94 = 77,672.51 : x
  2. Step 2: Convert to fraction form
    190,123.95/285,077.94 = 77,672.51/x
  3. Step 3: Cross multiply
    190,123.95x = 285,077.94 × 77,672.51
  4. Step 4: Simplify right side
    190,123.95x = 22,142,719,858.12
  5. Step 5: Solve for x
    x = 22,142,719,858.12/190,123.95
  6. Step 6: Final answer
    x = 116,464.65

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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.