Home / 131,240.94-181,129.80-74,641.38

Finding the Fourth Proportional to 131,240.94, 181,129.80 and 74,641.38

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Solution

The fourth proportional to 131,240.94, 181,129.80 and 74,641.38 is: 103,014.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,240.94 : 181,129.80 = 74,641.38 : x
  2. Step 2: Convert to fraction form
    131,240.94/181,129.80 = 74,641.38/x
  3. Step 3: Cross multiply
    131,240.94x = 181,129.80 × 74,641.38
  4. Step 4: Simplify right side
    131,240.94x = 13,519,778,231.12
  5. Step 5: Solve for x
    x = 13,519,778,231.12/131,240.94
  6. Step 6: Final answer
    x = 103,014.95

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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.