Home / 118,981.13-164,190.95-67,990.61

Finding the Fourth Proportional to 118,981.13, 164,190.95 and 67,990.61

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Solution

The fourth proportional to 118,981.13, 164,190.95 and 67,990.61 is: 93,825.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,981.13 : 164,190.95 = 67,990.61 : x
  2. Step 2: Convert to fraction form
    118,981.13/164,190.95 = 67,990.61/x
  3. Step 3: Cross multiply
    118,981.13x = 164,190.95 × 67,990.61
  4. Step 4: Simplify right side
    118,981.13x = 11,163,443,172.47
  5. Step 5: Solve for x
    x = 11,163,443,172.47/118,981.13
  6. Step 6: Final answer
    x = 93,825.33

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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.