Home / 121,085,456.70-181,628,185.05-84,734,892.30

Finding the Fourth Proportional to 121,085,456.70, 181,628,185.05 and 84,734,892.30

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Solution

The fourth proportional to 121,085,456.70, 181,628,185.05 and 84,734,892.30 is: 127,102,338.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,085,456.70 : 181,628,185.05 = 84,734,892.30 : x
  2. Step 2: Convert to fraction form
    121,085,456.70/181,628,185.05 = 84,734,892.30/x
  3. Step 3: Cross multiply
    121,085,456.70x = 181,628,185.05 × 84,734,892.30
  4. Step 4: Simplify right side
    121,085,456.70x = 15,390,244,698,856,220
  5. Step 5: Solve for x
    x = 15,390,244,698,856,220/121,085,456.70
  6. Step 6: Final answer
    x = 127,102,338.45

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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.