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Finding the Fourth Proportional to 189,953.60, 262,138.56 and 118,362.56

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Solution

The fourth proportional to 189,953.60, 262,138.56 and 118,362.56 is: 163,341.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,953.60 : 262,138.56 = 118,362.56 : x
  2. Step 2: Convert to fraction form
    189,953.60/262,138.56 = 118,362.56/x
  3. Step 3: Cross multiply
    189,953.60x = 262,138.56 × 118,362.56
  4. Step 4: Simplify right side
    189,953.60x = 31,027,391,036.31
  5. Step 5: Solve for x
    x = 31,027,391,036.31/189,953.60
  6. Step 6: Final answer
    x = 163,341.95

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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.