Home / 121,162.94-181,731.44-42,278.66

Finding the Fourth Proportional to 121,162.94, 181,731.44 and 42,278.66

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Solution

The fourth proportional to 121,162.94, 181,731.44 and 42,278.66 is: 63,413.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,162.94 : 181,731.44 = 42,278.66 : x
  2. Step 2: Convert to fraction form
    121,162.94/181,731.44 = 42,278.66/x
  3. Step 3: Cross multiply
    121,162.94x = 181,731.44 × 42,278.66
  4. Step 4: Simplify right side
    121,162.94x = 7,683,360,643.02
  5. Step 5: Solve for x
    x = 7,683,360,643.02/121,162.94
  6. Step 6: Final answer
    x = 63,413.46

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1.5x scale

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.