Home / 121,112.30-167,101.41-72,701.66

Finding the Fourth Proportional to 121,112.30, 167,101.41 and 72,701.66

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Solution

The fourth proportional to 121,112.30, 167,101.41 and 72,701.66 is: 100,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,112.30 : 167,101.41 = 72,701.66 : x
  2. Step 2: Convert to fraction form
    121,112.30/167,101.41 = 72,701.66/x
  3. Step 3: Cross multiply
    121,112.30x = 167,101.41 × 72,701.66
  4. Step 4: Simplify right side
    121,112.30x = 12,148,549,895.34
  5. Step 5: Solve for x
    x = 12,148,549,895.34/121,112.30
  6. Step 6: Final answer
    x = 100,308.14

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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.