Home / 137,107,087.10-189,207,759.66-78,371,013.38

Finding the Fourth Proportional to 137,107,087.10, 189,207,759.66 and 78,371,013.38

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Solution

The fourth proportional to 137,107,087.10, 189,207,759.66 and 78,371,013.38 is: 108,151,986.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,107,087.10 : 189,207,759.66 = 78,371,013.38 : x
  2. Step 2: Convert to fraction form
    137,107,087.10/189,207,759.66 = 78,371,013.38/x
  3. Step 3: Cross multiply
    137,107,087.10x = 189,207,759.66 × 78,371,013.38
  4. Step 4: Simplify right side
    137,107,087.10x = 14,828,403,863,913,684
  5. Step 5: Solve for x
    x = 14,828,403,863,913,684/137,107,087.10
  6. Step 6: Final answer
    x = 108,151,986.72

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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.