Home / 140,681.28-194,145.06-77,019.54

Finding the Fourth Proportional to 140,681.28, 194,145.06 and 77,019.54

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Solution

The fourth proportional to 140,681.28, 194,145.06 and 77,019.54 is: 106,289.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,681.28 : 194,145.06 = 77,019.54 : x
  2. Step 2: Convert to fraction form
    140,681.28/194,145.06 = 77,019.54/x
  3. Step 3: Cross multiply
    140,681.28x = 194,145.06 × 77,019.54
  4. Step 4: Simplify right side
    140,681.28x = 14,952,963,214.47
  5. Step 5: Solve for x
    x = 14,952,963,214.47/140,681.28
  6. Step 6: Final answer
    x = 106,289.64

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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.