Home / 117,080.84-161,641.16-76,864.95

Finding the Fourth Proportional to 117,080.84, 161,641.16 and 76,864.95

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Solution

The fourth proportional to 117,080.84, 161,641.16 and 76,864.95 is: 106,119.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,080.84 : 161,641.16 = 76,864.95 : x
  2. Step 2: Convert to fraction form
    117,080.84/161,641.16 = 76,864.95/x
  3. Step 3: Cross multiply
    117,080.84x = 161,641.16 × 76,864.95
  4. Step 4: Simplify right side
    117,080.84x = 12,424,539,297.02
  5. Step 5: Solve for x
    x = 12,424,539,297.02/117,080.84
  6. Step 6: Final answer
    x = 106,119.33

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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.