Home / 103,680,721.30-155,521,081.95-76,806,865.30

Finding the Fourth Proportional to 103,680,721.30, 155,521,081.95 and 76,806,865.30

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Solution

The fourth proportional to 103,680,721.30, 155,521,081.95 and 76,806,865.30 is: 115,210,297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680,721.30 : 155,521,081.95 = 76,806,865.30 : x
  2. Step 2: Convert to fraction form
    103,680,721.30/155,521,081.95 = 76,806,865.30/x
  3. Step 3: Cross multiply
    103,680,721.30x = 155,521,081.95 × 76,806,865.30
  4. Step 4: Simplify right side
    103,680,721.30x = 11,945,086,792,643,910
  5. Step 5: Solve for x
    x = 11,945,086,792,643,910/103,680,721.30
  6. Step 6: Final answer
    x = 115,210,297.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.