Home / 121,106.32-167,057.64-72,695.36

Finding the Fourth Proportional to 121,106.32, 167,057.64 and 72,695.36

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Solution

The fourth proportional to 121,106.32, 167,057.64 and 72,695.36 is: 100,278.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,106.32 : 167,057.64 = 72,695.36 : x
  2. Step 2: Convert to fraction form
    121,106.32/167,057.64 = 72,695.36/x
  3. Step 3: Cross multiply
    121,106.32x = 167,057.64 × 72,695.36
  4. Step 4: Simplify right side
    121,106.32x = 12,144,315,280.55
  5. Step 5: Solve for x
    x = 12,144,315,280.55/121,106.32
  6. Step 6: Final answer
    x = 100,278.13

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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.