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Finding the Fourth Proportional to 121,209.99, 167,269.10 and 70,907.91

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Solution

The fourth proportional to 121,209.99, 167,269.10 and 70,907.91 is: 97,852.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,209.99 : 167,269.10 = 70,907.91 : x
  2. Step 2: Convert to fraction form
    121,209.99/167,269.10 = 70,907.91/x
  3. Step 3: Cross multiply
    121,209.99x = 167,269.10 × 70,907.91
  4. Step 4: Simplify right side
    121,209.99x = 11,860,701,934.04
  5. Step 5: Solve for x
    x = 11,860,701,934.04/121,209.99
  6. Step 6: Final answer
    x = 97,852.51

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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.