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Finding the Fourth Proportional to 103,858.58, 155,926.27 and 70,237.56

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Solution

The fourth proportional to 103,858.58, 155,926.27 and 70,237.56 is: 105,449.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,858.58 : 155,926.27 = 70,237.56 : x
  2. Step 2: Convert to fraction form
    103,858.58/155,926.27 = 70,237.56/x
  3. Step 3: Cross multiply
    103,858.58x = 155,926.27 × 70,237.56
  4. Step 4: Simplify right side
    103,858.58x = 10,951,879,706.51
  5. Step 5: Solve for x
    x = 10,951,879,706.51/103,858.58
  6. Step 6: Final answer
    x = 105,449.93

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1.5x scale

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.