Home / 131,210.82-181,071.51-74,620.98

Finding the Fourth Proportional to 131,210.82, 181,071.51 and 74,620.98

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Solution

The fourth proportional to 131,210.82, 181,071.51 and 74,620.98 is: 102,977.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,210.82 : 181,071.51 = 74,620.98 : x
  2. Step 2: Convert to fraction form
    131,210.82/181,071.51 = 74,620.98/x
  3. Step 3: Cross multiply
    131,210.82x = 181,071.51 × 74,620.98
  4. Step 4: Simplify right side
    131,210.82x = 13,511,733,526.28
  5. Step 5: Solve for x
    x = 13,511,733,526.28/131,210.82
  6. Step 6: Final answer
    x = 102,977.28

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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.