Home / 144,503,608.67-199,414,979.79-78,424,106.92

Finding the Fourth Proportional to 144,503,608.67, 199,414,979.79 and 78,424,106.92

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Solution

The fourth proportional to 144,503,608.67, 199,414,979.79 and 78,424,106.92 is: 108,225,267.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,503,608.67 : 199,414,979.79 = 78,424,106.92 : x
  2. Step 2: Convert to fraction form
    144,503,608.67/199,414,979.79 = 78,424,106.92/x
  3. Step 3: Cross multiply
    144,503,608.67x = 199,414,979.79 × 78,424,106.92
  4. Step 4: Simplify right side
    144,503,608.67x = 15,638,941,696,108,478
  5. Step 5: Solve for x
    x = 15,638,941,696,108,478/144,503,608.67
  6. Step 6: Final answer
    x = 108,225,267.46

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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.