Home / 129,016.60-178,011.75-75,270.94

Finding the Fourth Proportional to 129,016.60, 178,011.75 and 75,270.94

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Solution

The fourth proportional to 129,016.60, 178,011.75 and 75,270.94 is: 103,855.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,016.60 : 178,011.75 = 75,270.94 : x
  2. Step 2: Convert to fraction form
    129,016.60/178,011.75 = 75,270.94/x
  3. Step 3: Cross multiply
    129,016.60x = 178,011.75 × 75,270.94
  4. Step 4: Simplify right side
    129,016.60x = 13,399,111,753.55
  5. Step 5: Solve for x
    x = 13,399,111,753.55/129,016.60
  6. Step 6: Final answer
    x = 103,855.72

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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.