Home / 136,891,228.50-188,909,895.33-78,944,476.50

Finding the Fourth Proportional to 136,891,228.50, 188,909,895.33 and 78,944,476.50

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Solution

The fourth proportional to 136,891,228.50, 188,909,895.33 and 78,944,476.50 is: 108,943,377.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,891,228.50 : 188,909,895.33 = 78,944,476.50 : x
  2. Step 2: Convert to fraction form
    136,891,228.50/188,909,895.33 = 78,944,476.50/x
  3. Step 3: Cross multiply
    136,891,228.50x = 188,909,895.33 × 78,944,476.50
  4. Step 4: Simplify right side
    136,891,228.50x = 14,913,392,792,496,646
  5. Step 5: Solve for x
    x = 14,913,392,792,496,646/136,891,228.50
  6. Step 6: Final answer
    x = 108,943,377.57

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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.