Home / 129,800.48-178,986.36-102,528.62

Finding the Fourth Proportional to 129,800.48, 178,986.36 and 102,528.62

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Solution

The fourth proportional to 129,800.48, 178,986.36 and 102,528.62 is: 141,380.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,800.48 : 178,986.36 = 102,528.62 : x
  2. Step 2: Convert to fraction form
    129,800.48/178,986.36 = 102,528.62/x
  3. Step 3: Cross multiply
    129,800.48x = 178,986.36 × 102,528.62
  4. Step 4: Simplify right side
    129,800.48x = 18,351,224,489.62
  5. Step 5: Solve for x
    x = 18,351,224,489.62/129,800.48
  6. Step 6: Final answer
    x = 141,380.25

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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.