Home / 140,667.21-194,121.08-77,009.10

Finding the Fourth Proportional to 140,667.21, 194,121.08 and 77,009.10

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Solution

The fourth proportional to 140,667.21, 194,121.08 and 77,009.10 is: 106,272.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,667.21 : 194,121.08 = 77,009.10 : x
  2. Step 2: Convert to fraction form
    140,667.21/194,121.08 = 77,009.10/x
  3. Step 3: Cross multiply
    140,667.21x = 194,121.08 × 77,009.10
  4. Step 4: Simplify right side
    140,667.21x = 14,949,089,276.78
  5. Step 5: Solve for x
    x = 14,949,089,276.78/140,667.21
  6. Step 6: Final answer
    x = 106,272.74

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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.