Home / 86,601.12-129,914.64-75,427.44

Finding the Fourth Proportional to 86,601.12, 129,914.64 and 75,427.44

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Solution

The fourth proportional to 86,601.12, 129,914.64 and 75,427.44 is: 113,152.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,601.12 : 129,914.64 = 75,427.44 : x
  2. Step 2: Convert to fraction form
    86,601.12/129,914.64 = 75,427.44/x
  3. Step 3: Cross multiply
    86,601.12x = 129,914.64 × 75,427.44
  4. Step 4: Simplify right side
    86,601.12x = 9,799,128,713.72
  5. Step 5: Solve for x
    x = 9,799,128,713.72/86,601.12
  6. Step 6: Final answer
    x = 113,152.45

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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.