Home / 121,082,005.20-181,623,007.80-84,731,440.80

Finding the Fourth Proportional to 121,082,005.20, 181,623,007.80 and 84,731,440.80

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Solution

The fourth proportional to 121,082,005.20, 181,623,007.80 and 84,731,440.80 is: 127,097,161.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,082,005.20 : 181,623,007.80 = 84,731,440.80 : x
  2. Step 2: Convert to fraction form
    121,082,005.20/181,623,007.80 = 84,731,440.80/x
  3. Step 3: Cross multiply
    121,082,005.20x = 181,623,007.80 × 84,731,440.80
  4. Step 4: Simplify right side
    121,082,005.20x = 15,389,179,133,323,638
  5. Step 5: Solve for x
    x = 15,389,179,133,323,638/121,082,005.20
  6. Step 6: Final answer
    x = 127,097,161.20

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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.