Home / 86,521.08-129,878.84-67,034.64

Finding the Fourth Proportional to 86,521.08, 129,878.84 and 67,034.64

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Solution

The fourth proportional to 86,521.08, 129,878.84 and 67,034.64 is: 100,627.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,521.08 : 129,878.84 = 67,034.64 : x
  2. Step 2: Convert to fraction form
    86,521.08/129,878.84 = 67,034.64/x
  3. Step 3: Cross multiply
    86,521.08x = 129,878.84 × 67,034.64
  4. Step 4: Simplify right side
    86,521.08x = 8,706,381,283.02
  5. Step 5: Solve for x
    x = 8,706,381,283.02/86,521.08
  6. Step 6: Final answer
    x = 100,627.28

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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.