Home / 129,453.57-178,646.58-75,728.16

Finding the Fourth Proportional to 129,453.57, 178,646.58 and 75,728.16

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Solution

The fourth proportional to 129,453.57, 178,646.58 and 75,728.16 is: 104,505.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,453.57 : 178,646.58 = 75,728.16 : x
  2. Step 2: Convert to fraction form
    129,453.57/178,646.58 = 75,728.16/x
  3. Step 3: Cross multiply
    129,453.57x = 178,646.58 × 75,728.16
  4. Step 4: Simplify right side
    129,453.57x = 13,528,576,793.69
  5. Step 5: Solve for x
    x = 13,528,576,793.69/129,453.57
  6. Step 6: Final answer
    x = 104,505.24

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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.