Home / 134,870.31-186,006.75-81,145.28

Finding the Fourth Proportional to 134,870.31, 186,006.75 and 81,145.28

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Solution

The fourth proportional to 134,870.31, 186,006.75 and 81,145.28 is: 111,911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,870.31 : 186,006.75 = 81,145.28 : x
  2. Step 2: Convert to fraction form
    134,870.31/186,006.75 = 81,145.28/x
  3. Step 3: Cross multiply
    134,870.31x = 186,006.75 × 81,145.28
  4. Step 4: Simplify right side
    134,870.31x = 15,093,570,275.66
  5. Step 5: Solve for x
    x = 15,093,570,275.66/134,870.31
  6. Step 6: Final answer
    x = 111,911.73

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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.