Home / 129,444.15-178,632.56-72,855.53

Finding the Fourth Proportional to 129,444.15, 178,632.56 and 72,855.53

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Solution

The fourth proportional to 129,444.15, 178,632.56 and 72,855.53 is: 100,540.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,444.15 : 178,632.56 = 72,855.53 : x
  2. Step 2: Convert to fraction form
    129,444.15/178,632.56 = 72,855.53/x
  3. Step 3: Cross multiply
    129,444.15x = 178,632.56 × 72,855.53
  4. Step 4: Simplify right side
    129,444.15x = 13,014,368,576.62
  5. Step 5: Solve for x
    x = 13,014,368,576.62/129,444.15
  6. Step 6: Final answer
    x = 100,540.42

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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.