Home / 129,017.10-178,012.44-75,271.44

Finding the Fourth Proportional to 129,017.10, 178,012.44 and 75,271.44

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Solution

The fourth proportional to 129,017.10, 178,012.44 and 75,271.44 is: 103,856.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,017.10 : 178,012.44 = 75,271.44 : x
  2. Step 2: Convert to fraction form
    129,017.10/178,012.44 = 75,271.44/x
  3. Step 3: Cross multiply
    129,017.10x = 178,012.44 × 75,271.44
  4. Step 4: Simplify right side
    129,017.10x = 13,399,252,696.71
  5. Step 5: Solve for x
    x = 13,399,252,696.71/129,017.10
  6. Step 6: Final answer
    x = 103,856.41

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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.