Home / 105,486.90-158,231.01-43,157.40

Finding the Fourth Proportional to 105,486.90, 158,231.01 and 43,157.40

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Solution

The fourth proportional to 105,486.90, 158,231.01 and 43,157.40 is: 64,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.90 : 158,231.01 = 43,157.40 : x
  2. Step 2: Convert to fraction form
    105,486.90/158,231.01 = 43,157.40/x
  3. Step 3: Cross multiply
    105,486.90x = 158,231.01 × 43,157.40
  4. Step 4: Simplify right side
    105,486.90x = 6,828,838,990.97
  5. Step 5: Solve for x
    x = 6,828,838,990.97/105,486.90
  6. Step 6: Final answer
    x = 64,736.37

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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.