Home / 129,475.68-178,676.73-72,114.54

Finding the Fourth Proportional to 129,475.68, 178,676.73 and 72,114.54

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Solution

The fourth proportional to 129,475.68, 178,676.73 and 72,114.54 is: 99,518.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,475.68 : 178,676.73 = 72,114.54 : x
  2. Step 2: Convert to fraction form
    129,475.68/178,676.73 = 72,114.54/x
  3. Step 3: Cross multiply
    129,475.68x = 178,676.73 × 72,114.54
  4. Step 4: Simplify right side
    129,475.68x = 12,885,190,192.65
  5. Step 5: Solve for x
    x = 12,885,190,192.65/129,475.68
  6. Step 6: Final answer
    x = 99,518.23

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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.