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Finding the Fourth Proportional to 121,498.80, 167,667.90 and 67,783.80

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Solution

The fourth proportional to 121,498.80, 167,667.90 and 67,783.80 is: 93,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,498.80 : 167,667.90 = 67,783.80 : x
  2. Step 2: Convert to fraction form
    121,498.80/167,667.90 = 67,783.80/x
  3. Step 3: Cross multiply
    121,498.80x = 167,667.90 × 67,783.80
  4. Step 4: Simplify right side
    121,498.80x = 11,365,167,400.02
  5. Step 5: Solve for x
    x = 11,365,167,400.02/121,498.80
  6. Step 6: Final answer
    x = 93,541.40

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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.