Home / 121,196.40-167,257.92-72,813.12

Finding the Fourth Proportional to 121,196.40, 167,257.92 and 72,813.12

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Solution

The fourth proportional to 121,196.40, 167,257.92 and 72,813.12 is: 100,486.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,196.40 : 167,257.92 = 72,813.12 : x
  2. Step 2: Convert to fraction form
    121,196.40/167,257.92 = 72,813.12/x
  3. Step 3: Cross multiply
    121,196.40x = 167,257.92 × 72,813.12
  4. Step 4: Simplify right side
    121,196.40x = 12,178,570,999.91
  5. Step 5: Solve for x
    x = 12,178,570,999.91/121,196.40
  6. Step 6: Final answer
    x = 100,486.24

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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.