Home / 149,731.65-206,664.36-86,106.15

Finding the Fourth Proportional to 149,731.65, 206,664.36 and 86,106.15

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Solution

The fourth proportional to 149,731.65, 206,664.36 and 86,106.15 is: 118,846.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,731.65 : 206,664.36 = 86,106.15 : x
  2. Step 2: Convert to fraction form
    149,731.65/206,664.36 = 86,106.15/x
  3. Step 3: Cross multiply
    149,731.65x = 206,664.36 × 86,106.15
  4. Step 4: Simplify right side
    149,731.65x = 17,795,072,381.81
  5. Step 5: Solve for x
    x = 17,795,072,381.81/149,731.65
  6. Step 6: Final answer
    x = 118,846.43

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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.