Home / 115,731,600.64-159,709,396.80-66,172,904.98

Finding the Fourth Proportional to 115,731,600.64, 159,709,396.80 and 66,172,904.98

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Solution

The fourth proportional to 115,731,600.64, 159,709,396.80 and 66,172,904.98 is: 91,318,487.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,731,600.64 : 159,709,396.80 = 66,172,904.98 : x
  2. Step 2: Convert to fraction form
    115,731,600.64/159,709,396.80 = 66,172,904.98/x
  3. Step 3: Cross multiply
    115,731,600.64x = 159,709,396.80 × 66,172,904.98
  4. Step 4: Simplify right side
    115,731,600.64x = 10,568,434,738,859,516
  5. Step 5: Solve for x
    x = 10,568,434,738,859,516/115,731,600.64
  6. Step 6: Final answer
    x = 91,318,487.61

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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.