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Finding the Fourth Proportional to 121,350.40, 181,960.80 and 51,150.40

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Solution

The fourth proportional to 121,350.40, 181,960.80 and 51,150.40 is: 76,698.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,350.40 : 181,960.80 = 51,150.40 : x
  2. Step 2: Convert to fraction form
    121,350.40/181,960.80 = 51,150.40/x
  3. Step 3: Cross multiply
    121,350.40x = 181,960.80 × 51,150.40
  4. Step 4: Simplify right side
    121,350.40x = 9,307,367,704.32
  5. Step 5: Solve for x
    x = 9,307,367,704.32/121,350.40
  6. Step 6: Final answer
    x = 76,698.29

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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.