Home / 121,513.44-167,920.02-87,633.12

Finding the Fourth Proportional to 121,513.44, 167,920.02 and 87,633.12

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Solution

The fourth proportional to 121,513.44, 167,920.02 and 87,633.12 is: 121,100.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,513.44 : 167,920.02 = 87,633.12 : x
  2. Step 2: Convert to fraction form
    121,513.44/167,920.02 = 87,633.12/x
  3. Step 3: Cross multiply
    121,513.44x = 167,920.02 × 87,633.12
  4. Step 4: Simplify right side
    121,513.44x = 14,715,355,263.06
  5. Step 5: Solve for x
    x = 14,715,355,263.06/121,513.44
  6. Step 6: Final answer
    x = 121,100.64

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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.