Home / 125,530.78-173,146.50-80,188.63

Finding the Fourth Proportional to 125,530.78, 173,146.50 and 80,188.63

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Solution

The fourth proportional to 125,530.78, 173,146.50 and 80,188.63 is: 110,605.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,530.78 : 173,146.50 = 80,188.63 : x
  2. Step 2: Convert to fraction form
    125,530.78/173,146.50 = 80,188.63/x
  3. Step 3: Cross multiply
    125,530.78x = 173,146.50 × 80,188.63
  4. Step 4: Simplify right side
    125,530.78x = 13,884,380,624.30
  5. Step 5: Solve for x
    x = 13,884,380,624.30/125,530.78
  6. Step 6: Final answer
    x = 110,605.39

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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.