Home / 145,039.80-217,559.70-82,716.60

Finding the Fourth Proportional to 145,039.80, 217,559.70 and 82,716.60

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Solution

The fourth proportional to 145,039.80, 217,559.70 and 82,716.60 is: 124,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,039.80 : 217,559.70 = 82,716.60 : x
  2. Step 2: Convert to fraction form
    145,039.80/217,559.70 = 82,716.60/x
  3. Step 3: Cross multiply
    145,039.80x = 217,559.70 × 82,716.60
  4. Step 4: Simplify right side
    145,039.80x = 17,995,798,681.02
  5. Step 5: Solve for x
    x = 17,995,798,681.02/145,039.80
  6. Step 6: Final answer
    x = 124,074.90

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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.