Home / 121,623.84-167,841-67,908.78

Finding the Fourth Proportional to 121,623.84, 167,841 and 67,908.78

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Solution

The fourth proportional to 121,623.84, 167,841 and 67,908.78 is: 93,714.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,623.84 : 167,841 = 67,908.78 : x
  2. Step 2: Convert to fraction form
    121,623.84/167,841 = 67,908.78/x
  3. Step 3: Cross multiply
    121,623.84x = 167,841 × 67,908.78
  4. Step 4: Simplify right side
    121,623.84x = 11,397,877,543.98
  5. Step 5: Solve for x
    x = 11,397,877,543.98/121,623.84
  6. Step 6: Final answer
    x = 93,714.17

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1.5x scale

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.