Home / 117,840.21-162,619.18-64,125.21

Finding the Fourth Proportional to 117,840.21, 162,619.18 and 64,125.21

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Solution

The fourth proportional to 117,840.21, 162,619.18 and 64,125.21 is: 88,492.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,840.21 : 162,619.18 = 64,125.21 : x
  2. Step 2: Convert to fraction form
    117,840.21/162,619.18 = 64,125.21/x
  3. Step 3: Cross multiply
    117,840.21x = 162,619.18 × 64,125.21
  4. Step 4: Simplify right side
    117,840.21x = 10,427,989,067.53
  5. Step 5: Solve for x
    x = 10,427,989,067.53/117,840.21
  6. Step 6: Final answer
    x = 88,492.62

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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.