Home / 130,885.80-196,328.70-83,999.40

Finding the Fourth Proportional to 130,885.80, 196,328.70 and 83,999.40

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Solution

The fourth proportional to 130,885.80, 196,328.70 and 83,999.40 is: 125,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,885.80 : 196,328.70 = 83,999.40 : x
  2. Step 2: Convert to fraction form
    130,885.80/196,328.70 = 83,999.40/x
  3. Step 3: Cross multiply
    130,885.80x = 196,328.70 × 83,999.40
  4. Step 4: Simplify right side
    130,885.80x = 16,491,493,002.78
  5. Step 5: Solve for x
    x = 16,491,493,002.78/130,885.80
  6. Step 6: Final answer
    x = 125,999.10

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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.