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Finding the Fourth Proportional to 121,355.99, 167,477.02 and 67,641.40

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Solution

The fourth proportional to 121,355.99, 167,477.02 and 67,641.40 is: 93,348.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,355.99 : 167,477.02 = 67,641.40 : x
  2. Step 2: Convert to fraction form
    121,355.99/167,477.02 = 67,641.40/x
  3. Step 3: Cross multiply
    121,355.99x = 167,477.02 × 67,641.40
  4. Step 4: Simplify right side
    121,355.99x = 11,328,379,512.83
  5. Step 5: Solve for x
    x = 11,328,379,512.83/121,355.99
  6. Step 6: Final answer
    x = 93,348.34

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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.