Home / 111,166.12-153,543.90-80,903.44

Finding the Fourth Proportional to 111,166.12, 153,543.90 and 80,903.44

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Solution

The fourth proportional to 111,166.12, 153,543.90 and 80,903.44 is: 111,744.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,166.12 : 153,543.90 = 80,903.44 : x
  2. Step 2: Convert to fraction form
    111,166.12/153,543.90 = 80,903.44/x
  3. Step 3: Cross multiply
    111,166.12x = 153,543.90 × 80,903.44
  4. Step 4: Simplify right side
    111,166.12x = 12,422,229,701.02
  5. Step 5: Solve for x
    x = 12,422,229,701.02/111,166.12
  6. Step 6: Final answer
    x = 111,744.74

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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.