Home / 105,722.55-158,662.66-42,543.23

Finding the Fourth Proportional to 105,722.55, 158,662.66 and 42,543.23

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Solution

The fourth proportional to 105,722.55, 158,662.66 and 42,543.23 is: 63,846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,722.55 : 158,662.66 = 42,543.23 : x
  2. Step 2: Convert to fraction form
    105,722.55/158,662.66 = 42,543.23/x
  3. Step 3: Cross multiply
    105,722.55x = 158,662.66 × 42,543.23
  4. Step 4: Simplify right side
    105,722.55x = 6,750,022,036.79
  5. Step 5: Solve for x
    x = 6,750,022,036.79/105,722.55
  6. Step 6: Final answer
    x = 63,846.57

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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.