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Finding the Fourth Proportional to 121,841.46, 168,176.97 and 70,866.18

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Solution

The fourth proportional to 121,841.46, 168,176.97 and 70,866.18 is: 97,816.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,841.46 : 168,176.97 = 70,866.18 : x
  2. Step 2: Convert to fraction form
    121,841.46/168,176.97 = 70,866.18/x
  3. Step 3: Cross multiply
    121,841.46x = 168,176.97 × 70,866.18
  4. Step 4: Simplify right side
    121,841.46x = 11,918,059,427.87
  5. Step 5: Solve for x
    x = 11,918,059,427.87/121,841.46
  6. Step 6: Final answer
    x = 97,816.12

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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.