Home / 105,722.42-158,662.47-42,543.11

Finding the Fourth Proportional to 105,722.42, 158,662.47 and 42,543.11

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Solution

The fourth proportional to 105,722.42, 158,662.47 and 42,543.11 is: 63,846.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,722.42 : 158,662.47 = 42,543.11 : x
  2. Step 2: Convert to fraction form
    105,722.42/158,662.47 = 42,543.11/x
  3. Step 3: Cross multiply
    105,722.42x = 158,662.47 × 42,543.11
  4. Step 4: Simplify right side
    105,722.42x = 6,749,994,120.77
  5. Step 5: Solve for x
    x = 6,749,994,120.77/105,722.42
  6. Step 6: Final answer
    x = 63,846.39

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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.