Home / 221,423.10-332,134.65-128,111.10

Finding the Fourth Proportional to 221,423.10, 332,134.65 and 128,111.10

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Solution

The fourth proportional to 221,423.10, 332,134.65 and 128,111.10 is: 192,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,423.10 : 332,134.65 = 128,111.10 : x
  2. Step 2: Convert to fraction form
    221,423.10/332,134.65 = 128,111.10/x
  3. Step 3: Cross multiply
    221,423.10x = 332,134.65 × 128,111.10
  4. Step 4: Simplify right side
    221,423.10x = 42,550,135,359.62
  5. Step 5: Solve for x
    x = 42,550,135,359.62/221,423.10
  6. Step 6: Final answer
    x = 192,166.65

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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.