Home / 131,643.93-197,268.93-78,995.55

Finding the Fourth Proportional to 131,643.93, 197,268.93 and 78,995.55

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Solution

The fourth proportional to 131,643.93, 197,268.93 and 78,995.55 is: 118,375.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,643.93 : 197,268.93 = 78,995.55 : x
  2. Step 2: Convert to fraction form
    131,643.93/197,268.93 = 78,995.55/x
  3. Step 3: Cross multiply
    131,643.93x = 197,268.93 × 78,995.55
  4. Step 4: Simplify right side
    131,643.93x = 15,583,367,623.26
  5. Step 5: Solve for x
    x = 15,583,367,623.26/131,643.93
  6. Step 6: Final answer
    x = 118,375.13

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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.