Home / 121,413.46-181,964.32-58,138.77

Finding the Fourth Proportional to 121,413.46, 181,964.32 and 58,138.77

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Solution

The fourth proportional to 121,413.46, 181,964.32 and 58,138.77 is: 87,133.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,413.46 : 181,964.32 = 58,138.77 : x
  2. Step 2: Convert to fraction form
    121,413.46/181,964.32 = 58,138.77/x
  3. Step 3: Cross multiply
    121,413.46x = 181,964.32 × 58,138.77
  4. Step 4: Simplify right side
    121,413.46x = 10,579,181,748.69
  5. Step 5: Solve for x
    x = 10,579,181,748.69/121,413.46
  6. Step 6: Final answer
    x = 87,133.52

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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.