Home / 121,511,990.75-167,686,970.64-65,757,397.19

Finding the Fourth Proportional to 121,511,990.75, 167,686,970.64 and 65,757,397.19

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Solution

The fourth proportional to 121,511,990.75, 167,686,970.64 and 65,757,397.19 is: 90,745,437.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,511,990.75 : 167,686,970.64 = 65,757,397.19 : x
  2. Step 2: Convert to fraction form
    121,511,990.75/167,686,970.64 = 65,757,397.19/x
  3. Step 3: Cross multiply
    121,511,990.75x = 167,686,970.64 × 65,757,397.19
  4. Step 4: Simplify right side
    121,511,990.75x = 11,026,658,731,246,880
  5. Step 5: Solve for x
    x = 11,026,658,731,246,880/121,511,990.75
  6. Step 6: Final answer
    x = 90,745,437.25

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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.