Home / 131,459.49-181,427.65-80,506.04

Finding the Fourth Proportional to 131,459.49, 181,427.65 and 80,506.04

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Solution

The fourth proportional to 131,459.49, 181,427.65 and 80,506.04 is: 111,106.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,459.49 : 181,427.65 = 80,506.04 : x
  2. Step 2: Convert to fraction form
    131,459.49/181,427.65 = 80,506.04/x
  3. Step 3: Cross multiply
    131,459.49x = 181,427.65 × 80,506.04
  4. Step 4: Simplify right side
    131,459.49x = 14,606,020,539.60
  5. Step 5: Solve for x
    x = 14,606,020,539.60/131,459.49
  6. Step 6: Final answer
    x = 111,106.63

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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.