Home / 109,360.80-164,041.20-74,109.60

Finding the Fourth Proportional to 109,360.80, 164,041.20 and 74,109.60

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Solution

The fourth proportional to 109,360.80, 164,041.20 and 74,109.60 is: 111,164.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,360.80 : 164,041.20 = 74,109.60 : x
  2. Step 2: Convert to fraction form
    109,360.80/164,041.20 = 74,109.60/x
  3. Step 3: Cross multiply
    109,360.80x = 164,041.20 × 74,109.60
  4. Step 4: Simplify right side
    109,360.80x = 12,157,027,715.52
  5. Step 5: Solve for x
    x = 12,157,027,715.52/109,360.80
  6. Step 6: Final answer
    x = 111,164.40

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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.