Home / 201,916.19-278,643.74-111,272.10

Finding the Fourth Proportional to 201,916.19, 278,643.74 and 111,272.10

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Solution

The fourth proportional to 201,916.19, 278,643.74 and 111,272.10 is: 153,555.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,916.19 : 278,643.74 = 111,272.10 : x
  2. Step 2: Convert to fraction form
    201,916.19/278,643.74 = 111,272.10/x
  3. Step 3: Cross multiply
    201,916.19x = 278,643.74 × 111,272.10
  4. Step 4: Simplify right side
    201,916.19x = 31,005,273,545.29
  5. Step 5: Solve for x
    x = 31,005,273,545.29/201,916.19
  6. Step 6: Final answer
    x = 153,555.17

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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.