Home / 149,974.30-206,970.78-86,312.26

Finding the Fourth Proportional to 149,974.30, 206,970.78 and 86,312.26

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Solution

The fourth proportional to 149,974.30, 206,970.78 and 86,312.26 is: 119,114.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,974.30 : 206,970.78 = 86,312.26 : x
  2. Step 2: Convert to fraction form
    149,974.30/206,970.78 = 86,312.26/x
  3. Step 3: Cross multiply
    149,974.30x = 206,970.78 × 86,312.26
  4. Step 4: Simplify right side
    149,974.30x = 17,864,115,775.76
  5. Step 5: Solve for x
    x = 17,864,115,775.76/149,974.30
  6. Step 6: Final answer
    x = 119,114.51

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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.