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Finding the Fourth Proportional to 125,930.95, 188,896.22 and 86,368.12

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Solution

The fourth proportional to 125,930.95, 188,896.22 and 86,368.12 is: 129,552.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,930.95 : 188,896.22 = 86,368.12 : x
  2. Step 2: Convert to fraction form
    125,930.95/188,896.22 = 86,368.12/x
  3. Step 3: Cross multiply
    125,930.95x = 188,896.22 × 86,368.12
  4. Step 4: Simplify right side
    125,930.95x = 16,314,610,492.43
  5. Step 5: Solve for x
    x = 16,314,610,492.43/125,930.95
  6. Step 6: Final answer
    x = 129,552.03

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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.