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Finding the Fourth Proportional to 125,879.40, 173,699.32 and 74,193.12

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Solution

The fourth proportional to 125,879.40, 173,699.32 and 74,193.12 is: 102,378.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,879.40 : 173,699.32 = 74,193.12 : x
  2. Step 2: Convert to fraction form
    125,879.40/173,699.32 = 74,193.12/x
  3. Step 3: Cross multiply
    125,879.40x = 173,699.32 × 74,193.12
  4. Step 4: Simplify right side
    125,879.40x = 12,887,294,492.68
  5. Step 5: Solve for x
    x = 12,887,294,492.68/125,879.40
  6. Step 6: Final answer
    x = 102,378.11

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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.