Home / 139,968,355.20-209,952,532.80-82,431,009.60

Finding the Fourth Proportional to 139,968,355.20, 209,952,532.80 and 82,431,009.60

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Solution

The fourth proportional to 139,968,355.20, 209,952,532.80 and 82,431,009.60 is: 123,646,514.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,355.20 : 209,952,532.80 = 82,431,009.60 : x
  2. Step 2: Convert to fraction form
    139,968,355.20/209,952,532.80 = 82,431,009.60/x
  3. Step 3: Cross multiply
    139,968,355.20x = 209,952,532.80 × 82,431,009.60
  4. Step 4: Simplify right side
    139,968,355.20x = 17,306,599,246,781,114
  5. Step 5: Solve for x
    x = 17,306,599,246,781,114/139,968,355.20
  6. Step 6: Final answer
    x = 123,646,514.40

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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.