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Finding the Fourth Proportional to 131,362.63, 181,280.63 and 74,774.01

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Solution

The fourth proportional to 131,362.63, 181,280.63 and 74,774.01 is: 103,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,362.63 : 181,280.63 = 74,774.01 : x
  2. Step 2: Convert to fraction form
    131,362.63/181,280.63 = 74,774.01/x
  3. Step 3: Cross multiply
    131,362.63x = 181,280.63 × 74,774.01
  4. Step 4: Simplify right side
    131,362.63x = 13,555,078,920.96
  5. Step 5: Solve for x
    x = 13,555,078,920.96/131,362.63
  6. Step 6: Final answer
    x = 103,188.25

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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.