Home / 130,821,208.05-180,541,309.11-72,083,857.86

Finding the Fourth Proportional to 130,821,208.05, 180,541,309.11 and 72,083,857.86

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Solution

The fourth proportional to 130,821,208.05, 180,541,309.11 and 72,083,857.86 is: 99,480,155.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,821,208.05 : 180,541,309.11 = 72,083,857.86 : x
  2. Step 2: Convert to fraction form
    130,821,208.05/180,541,309.11 = 72,083,857.86/x
  3. Step 3: Cross multiply
    130,821,208.05x = 180,541,309.11 × 72,083,857.86
  4. Step 4: Simplify right side
    130,821,208.05x = 13,014,114,063,743,564
  5. Step 5: Solve for x
    x = 13,014,114,063,743,564/130,821,208.05
  6. Step 6: Final answer
    x = 99,480,155.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.