Home / 143,413.32-215,119.75-68,305.67

Finding the Fourth Proportional to 143,413.32, 215,119.75 and 68,305.67

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Solution

The fourth proportional to 143,413.32, 215,119.75 and 68,305.67 is: 102,458.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,413.32 : 215,119.75 = 68,305.67 : x
  2. Step 2: Convert to fraction form
    143,413.32/215,119.75 = 68,305.67/x
  3. Step 3: Cross multiply
    143,413.32x = 215,119.75 × 68,305.67
  4. Step 4: Simplify right side
    143,413.32x = 14,693,898,653.98
  5. Step 5: Solve for x
    x = 14,693,898,653.98/143,413.32
  6. Step 6: Final answer
    x = 102,458.40

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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.