Home / 143,585.37-198,321.93-105,289.65

Finding the Fourth Proportional to 143,585.37, 198,321.93 and 105,289.65

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Solution

The fourth proportional to 143,585.37, 198,321.93 and 105,289.65 is: 145,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,585.37 : 198,321.93 = 105,289.65 : x
  2. Step 2: Convert to fraction form
    143,585.37/198,321.93 = 105,289.65/x
  3. Step 3: Cross multiply
    143,585.37x = 198,321.93 × 105,289.65
  4. Step 4: Simplify right side
    143,585.37x = 20,881,246,597.02
  5. Step 5: Solve for x
    x = 20,881,246,597.02/143,585.37
  6. Step 6: Final answer
    x = 145,427.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.