Home / 129,331,578.89-178,450,935.82-74,316,806.57

Finding the Fourth Proportional to 129,331,578.89, 178,450,935.82 and 74,316,806.57

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Solution

The fourth proportional to 129,331,578.89, 178,450,935.82 and 74,316,806.57 is: 102,541,883.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,331,578.89 : 178,450,935.82 = 74,316,806.57 : x
  2. Step 2: Convert to fraction form
    129,331,578.89/178,450,935.82 = 74,316,806.57/x
  3. Step 3: Cross multiply
    129,331,578.89x = 178,450,935.82 × 74,316,806.57
  4. Step 4: Simplify right side
    129,331,578.89x = 13,261,903,679,570,422
  5. Step 5: Solve for x
    x = 13,261,903,679,570,422/129,331,578.89
  6. Step 6: Final answer
    x = 102,541,883.38

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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.