Home / 129,918.60-179,188.38-89,699.64

Finding the Fourth Proportional to 129,918.60, 179,188.38 and 89,699.64

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Solution

The fourth proportional to 129,918.60, 179,188.38 and 89,699.64 is: 123,716.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,918.60 : 179,188.38 = 89,699.64 : x
  2. Step 2: Convert to fraction form
    129,918.60/179,188.38 = 89,699.64/x
  3. Step 3: Cross multiply
    129,918.60x = 179,188.38 × 89,699.64
  4. Step 4: Simplify right side
    129,918.60x = 16,073,133,178.18
  5. Step 5: Solve for x
    x = 16,073,133,178.18/129,918.60
  6. Step 6: Final answer
    x = 123,716.95

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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.