Home / 189,078,811.38-260,928,235.31-105,447,020.81

Finding the Fourth Proportional to 189,078,811.38, 260,928,235.31 and 105,447,020.81

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Solution

The fourth proportional to 189,078,811.38, 260,928,235.31 and 105,447,020.81 is: 145,516,596.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,078,811.38 : 260,928,235.31 = 105,447,020.81 : x
  2. Step 2: Convert to fraction form
    189,078,811.38/260,928,235.31 = 105,447,020.81/x
  3. Step 3: Cross multiply
    189,078,811.38x = 260,928,235.31 × 105,447,020.81
  4. Step 4: Simplify right side
    189,078,811.38x = 27,514,105,056,818,272
  5. Step 5: Solve for x
    x = 27,514,105,056,818,272/189,078,811.38
  6. Step 6: Final answer
    x = 145,516,596.26

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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.