Home / 121,128,208.80-181,692,313.20-70,109,872.80

Finding the Fourth Proportional to 121,128,208.80, 181,692,313.20 and 70,109,872.80

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Solution

The fourth proportional to 121,128,208.80, 181,692,313.20 and 70,109,872.80 is: 105,164,809.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128,208.80 : 181,692,313.20 = 70,109,872.80 : x
  2. Step 2: Convert to fraction form
    121,128,208.80/181,692,313.20 = 70,109,872.80/x
  3. Step 3: Cross multiply
    121,128,208.80x = 181,692,313.20 × 70,109,872.80
  4. Step 4: Simplify right side
    121,128,208.80x = 12,738,424,967,189,760
  5. Step 5: Solve for x
    x = 12,738,424,967,189,760/121,128,208.80
  6. Step 6: Final answer
    x = 105,164,809.20

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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.