Home / 145,890.90-218,350.35-105,795.90

Finding the Fourth Proportional to 145,890.90, 218,350.35 and 105,795.90

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Solution

The fourth proportional to 145,890.90, 218,350.35 and 105,795.90 is: 158,341.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,890.90 : 218,350.35 = 105,795.90 : x
  2. Step 2: Convert to fraction form
    145,890.90/218,350.35 = 105,795.90/x
  3. Step 3: Cross multiply
    145,890.90x = 218,350.35 × 105,795.90
  4. Step 4: Simplify right side
    145,890.90x = 23,100,571,793.57
  5. Step 5: Solve for x
    x = 23,100,571,793.57/145,890.90
  6. Step 6: Final answer
    x = 158,341.42

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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.