Home / 149,639.16-206,521.74-104,287.80

Finding the Fourth Proportional to 149,639.16, 206,521.74 and 104,287.80

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Solution

The fourth proportional to 149,639.16, 206,521.74 and 104,287.80 is: 143,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,639.16 : 206,521.74 = 104,287.80 : x
  2. Step 2: Convert to fraction form
    149,639.16/206,521.74 = 104,287.80/x
  3. Step 3: Cross multiply
    149,639.16x = 206,521.74 × 104,287.80
  4. Step 4: Simplify right side
    149,639.16x = 21,537,697,916.77
  5. Step 5: Solve for x
    x = 21,537,697,916.77/149,639.16
  6. Step 6: Final answer
    x = 143,930.89

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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.