Home / 209,952,021.60-314,778,733.20-80,509,615.20

Finding the Fourth Proportional to 209,952,021.60, 314,778,733.20 and 80,509,615.20

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Solution

The fourth proportional to 209,952,021.60, 314,778,733.20 and 80,509,615.20 is: 120,707,171.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,021.60 : 314,778,733.20 = 80,509,615.20 : x
  2. Step 2: Convert to fraction form
    209,952,021.60/314,778,733.20 = 80,509,615.20/x
  3. Step 3: Cross multiply
    209,952,021.60x = 314,778,733.20 × 80,509,615.20
  4. Step 4: Simplify right side
    209,952,021.60x = 25,342,714,683,075,464
  5. Step 5: Solve for x
    x = 25,342,714,683,075,464/209,952,021.60
  6. Step 6: Final answer
    x = 120,707,171.52

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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.