Home / 201,931.52-278,664.29-111,287.55

Finding the Fourth Proportional to 201,931.52, 278,664.29 and 111,287.55

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Solution

The fourth proportional to 201,931.52, 278,664.29 and 111,287.55 is: 153,576.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,931.52 : 278,664.29 = 111,287.55 : x
  2. Step 2: Convert to fraction form
    201,931.52/278,664.29 = 111,287.55/x
  3. Step 3: Cross multiply
    201,931.52x = 278,664.29 × 111,287.55
  4. Step 4: Simplify right side
    201,931.52x = 31,011,865,208.99
  5. Step 5: Solve for x
    x = 31,011,865,208.99/201,931.52
  6. Step 6: Final answer
    x = 153,576.15

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1.5x scale

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.