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Finding the Fourth Proportional to 120,671.40, 181,007.10 and 73,432.20

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Solution

The fourth proportional to 120,671.40, 181,007.10 and 73,432.20 is: 110,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,671.40 : 181,007.10 = 73,432.20 : x
  2. Step 2: Convert to fraction form
    120,671.40/181,007.10 = 73,432.20/x
  3. Step 3: Cross multiply
    120,671.40x = 181,007.10 × 73,432.20
  4. Step 4: Simplify right side
    120,671.40x = 13,291,749,568.62
  5. Step 5: Solve for x
    x = 13,291,749,568.62/120,671.40
  6. Step 6: Final answer
    x = 110,148.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.