Home / 109,851.20-164,776.80-91,480.40

Finding the Fourth Proportional to 109,851.20, 164,776.80 and 91,480.40

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Solution

The fourth proportional to 109,851.20, 164,776.80 and 91,480.40 is: 137,220.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,851.20 : 164,776.80 = 91,480.40 : x
  2. Step 2: Convert to fraction form
    109,851.20/164,776.80 = 91,480.40/x
  3. Step 3: Cross multiply
    109,851.20x = 164,776.80 × 91,480.40
  4. Step 4: Simplify right side
    109,851.20x = 15,073,847,574.72
  5. Step 5: Solve for x
    x = 15,073,847,574.72/109,851.20
  6. Step 6: Final answer
    x = 137,220.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.