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Finding the Fourth Proportional to 131,185.86, 181,019.88 and 74,598.46

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Solution

The fourth proportional to 131,185.86, 181,019.88 and 74,598.46 is: 102,936.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,185.86 : 181,019.88 = 74,598.46 : x
  2. Step 2: Convert to fraction form
    131,185.86/181,019.88 = 74,598.46/x
  3. Step 3: Cross multiply
    131,185.86x = 181,019.88 × 74,598.46
  4. Step 4: Simplify right side
    131,185.86x = 13,503,804,277.38
  5. Step 5: Solve for x
    x = 13,503,804,277.38/131,185.86
  6. Step 6: Final answer
    x = 102,936.43

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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.