Home / 221,688.03-305,819.87-131,000.13

Finding the Fourth Proportional to 221,688.03, 305,819.87 and 131,000.13

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Solution

The fourth proportional to 221,688.03, 305,819.87 and 131,000.13 is: 180,715.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,688.03 : 305,819.87 = 131,000.13 : x
  2. Step 2: Convert to fraction form
    221,688.03/305,819.87 = 131,000.13/x
  3. Step 3: Cross multiply
    221,688.03x = 305,819.87 × 131,000.13
  4. Step 4: Simplify right side
    221,688.03x = 40,062,443,054.08
  5. Step 5: Solve for x
    x = 40,062,443,054.08/221,688.03
  6. Step 6: Final answer
    x = 180,715.41

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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.