Home / 121,809.22-168,106.46-70,142.44

Finding the Fourth Proportional to 121,809.22, 168,106.46 and 70,142.44

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Solution

The fourth proportional to 121,809.22, 168,106.46 and 70,142.44 is: 96,802.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,809.22 : 168,106.46 = 70,142.44 : x
  2. Step 2: Convert to fraction form
    121,809.22/168,106.46 = 70,142.44/x
  3. Step 3: Cross multiply
    121,809.22x = 168,106.46 × 70,142.44
  4. Step 4: Simplify right side
    121,809.22x = 11,791,397,284.16
  5. Step 5: Solve for x
    x = 11,791,397,284.16/121,809.22
  6. Step 6: Final answer
    x = 96,802.17

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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.