Home / 189,981.76-262,152.14-105,087.28

Finding the Fourth Proportional to 189,981.76, 262,152.14 and 105,087.28

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Solution

The fourth proportional to 189,981.76, 262,152.14 and 105,087.28 is: 145,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,981.76 : 262,152.14 = 105,087.28 : x
  2. Step 2: Convert to fraction form
    189,981.76/262,152.14 = 105,087.28/x
  3. Step 3: Cross multiply
    189,981.76x = 262,152.14 × 105,087.28
  4. Step 4: Simplify right side
    189,981.76x = 27,548,855,338.78
  5. Step 5: Solve for x
    x = 27,548,855,338.78/189,981.76
  6. Step 6: Final answer
    x = 145,007.90

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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.