Home / 105,709.12-158,252.64-70,561.60

Finding the Fourth Proportional to 105,709.12, 158,252.64 and 70,561.60

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Solution

The fourth proportional to 105,709.12, 158,252.64 and 70,561.60 is: 105,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,709.12 : 158,252.64 = 70,561.60 : x
  2. Step 2: Convert to fraction form
    105,709.12/158,252.64 = 70,561.60/x
  3. Step 3: Cross multiply
    105,709.12x = 158,252.64 × 70,561.60
  4. Step 4: Simplify right side
    105,709.12x = 11,166,559,482.62
  5. Step 5: Solve for x
    x = 11,166,559,482.62/105,709.12
  6. Step 6: Final answer
    x = 105,634.78

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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.