Home / 86,878.10-130,511.55-83,335.70

Finding the Fourth Proportional to 86,878.10, 130,511.55 and 83,335.70

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Solution

The fourth proportional to 86,878.10, 130,511.55 and 83,335.70 is: 125,190.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,878.10 : 130,511.55 = 83,335.70 : x
  2. Step 2: Convert to fraction form
    86,878.10/130,511.55 = 83,335.70/x
  3. Step 3: Cross multiply
    86,878.10x = 130,511.55 × 83,335.70
  4. Step 4: Simplify right side
    86,878.10x = 10,876,271,377.34
  5. Step 5: Solve for x
    x = 10,876,271,377.34/86,878.10
  6. Step 6: Final answer
    x = 125,190.02

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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.