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Finding the Fourth Proportional to 121,746.70, 168,007.22 and 68,032.16

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Solution

The fourth proportional to 121,746.70, 168,007.22 and 68,032.16 is: 93,882.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,746.70 : 168,007.22 = 68,032.16 : x
  2. Step 2: Convert to fraction form
    121,746.70/168,007.22 = 68,032.16/x
  3. Step 3: Cross multiply
    121,746.70x = 168,007.22 × 68,032.16
  4. Step 4: Simplify right side
    121,746.70x = 11,429,894,072.20
  5. Step 5: Solve for x
    x = 11,429,894,072.20/121,746.70
  6. Step 6: Final answer
    x = 93,882.58

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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.