Home / 121,178.25-167,238.95-70,919.37

Finding the Fourth Proportional to 121,178.25, 167,238.95 and 70,919.37

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Solution

The fourth proportional to 121,178.25, 167,238.95 and 70,919.37 is: 97,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,178.25 : 167,238.95 = 70,919.37 : x
  2. Step 2: Convert to fraction form
    121,178.25/167,238.95 = 70,919.37/x
  3. Step 3: Cross multiply
    121,178.25x = 167,238.95 × 70,919.37
  4. Step 4: Simplify right side
    121,178.25x = 11,860,480,618.86
  5. Step 5: Solve for x
    x = 11,860,480,618.86/121,178.25
  6. Step 6: Final answer
    x = 97,876.32

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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.