Home / 100,830.20-151,245.30-34,345.40

Finding the Fourth Proportional to 100,830.20, 151,245.30 and 34,345.40

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Solution

The fourth proportional to 100,830.20, 151,245.30 and 34,345.40 is: 51,518.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,830.20 : 151,245.30 = 34,345.40 : x
  2. Step 2: Convert to fraction form
    100,830.20/151,245.30 = 34,345.40/x
  3. Step 3: Cross multiply
    100,830.20x = 151,245.30 × 34,345.40
  4. Step 4: Simplify right side
    100,830.20x = 5,194,580,326.62
  5. Step 5: Solve for x
    x = 5,194,580,326.62/100,830.20
  6. Step 6: Final answer
    x = 51,518.10

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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.