Home / 209,714,615.80-314,571,923.70-128,085,278.20

Finding the Fourth Proportional to 209,714,615.80, 314,571,923.70 and 128,085,278.20

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Solution

The fourth proportional to 209,714,615.80, 314,571,923.70 and 128,085,278.20 is: 192,127,917.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,714,615.80 : 314,571,923.70 = 128,085,278.20 : x
  2. Step 2: Convert to fraction form
    209,714,615.80/314,571,923.70 = 128,085,278.20/x
  3. Step 3: Cross multiply
    209,714,615.80x = 314,571,923.70 × 128,085,278.20
  4. Step 4: Simplify right side
    209,714,615.80x = 40,292,032,361,023,672
  5. Step 5: Solve for x
    x = 40,292,032,361,023,672/209,714,615.80
  6. Step 6: Final answer
    x = 192,127,917.30

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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.