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Finding the Fourth Proportional to 121,746.84, 168,007.41 and 68,032.30

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Solution

The fourth proportional to 121,746.84, 168,007.41 and 68,032.30 is: 93,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,746.84 : 168,007.41 = 68,032.30 : x
  2. Step 2: Convert to fraction form
    121,746.84/168,007.41 = 68,032.30/x
  3. Step 3: Cross multiply
    121,746.84x = 168,007.41 × 68,032.30
  4. Step 4: Simplify right side
    121,746.84x = 11,429,930,519.34
  5. Step 5: Solve for x
    x = 11,429,930,519.34/121,746.84
  6. Step 6: Final answer
    x = 93,882.77

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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.