Home / 86,154.39-129,319.08-54,486.63

Finding the Fourth Proportional to 86,154.39, 129,319.08 and 54,486.63

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Solution

The fourth proportional to 86,154.39, 129,319.08 and 54,486.63 is: 81,785.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,154.39 : 129,319.08 = 54,486.63 : x
  2. Step 2: Convert to fraction form
    86,154.39/129,319.08 = 54,486.63/x
  3. Step 3: Cross multiply
    86,154.39x = 129,319.08 × 54,486.63
  4. Step 4: Simplify right side
    86,154.39x = 7,046,160,863.90
  5. Step 5: Solve for x
    x = 7,046,160,863.90/86,154.39
  6. Step 6: Final answer
    x = 81,785.28

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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.