Home / 201,656.28-278,280.77-111,011.51

Finding the Fourth Proportional to 201,656.28, 278,280.77 and 111,011.51

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Solution

The fourth proportional to 201,656.28, 278,280.77 and 111,011.51 is: 153,193.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,656.28 : 278,280.77 = 111,011.51 : x
  2. Step 2: Convert to fraction form
    201,656.28/278,280.77 = 111,011.51/x
  3. Step 3: Cross multiply
    201,656.28x = 278,280.77 × 111,011.51
  4. Step 4: Simplify right side
    201,656.28x = 30,892,368,622.31
  5. Step 5: Solve for x
    x = 30,892,368,622.31/201,656.28
  6. Step 6: Final answer
    x = 153,193.19

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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.