Home / 149,870.93-206,821.56-81,888.39

Finding the Fourth Proportional to 149,870.93, 206,821.56 and 81,888.39

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Solution

The fourth proportional to 149,870.93, 206,821.56 and 81,888.39 is: 113,005.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,870.93 : 206,821.56 = 81,888.39 : x
  2. Step 2: Convert to fraction form
    149,870.93/206,821.56 = 81,888.39/x
  3. Step 3: Cross multiply
    149,870.93x = 206,821.56 × 81,888.39
  4. Step 4: Simplify right side
    149,870.93x = 16,936,283,483.03
  5. Step 5: Solve for x
    x = 16,936,283,483.03/149,870.93
  6. Step 6: Final answer
    x = 113,005.80

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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.