Home / 111,809.22-154,307.64-83,465.70

Finding the Fourth Proportional to 111,809.22, 154,307.64 and 83,465.70

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Solution

The fourth proportional to 111,809.22, 154,307.64 and 83,465.70 is: 115,190.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,809.22 : 154,307.64 = 83,465.70 : x
  2. Step 2: Convert to fraction form
    111,809.22/154,307.64 = 83,465.70/x
  3. Step 3: Cross multiply
    111,809.22x = 154,307.64 × 83,465.70
  4. Step 4: Simplify right side
    111,809.22x = 12,879,395,187.95
  5. Step 5: Solve for x
    x = 12,879,395,187.95/111,809.22
  6. Step 6: Final answer
    x = 115,190.82

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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.