Home / 219,948.77-303,458.76-123,138.40

Finding the Fourth Proportional to 219,948.77, 303,458.76 and 123,138.40

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Solution

The fourth proportional to 219,948.77, 303,458.76 and 123,138.40 is: 169,891.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,948.77 : 303,458.76 = 123,138.40 : x
  2. Step 2: Convert to fraction form
    219,948.77/303,458.76 = 123,138.40/x
  3. Step 3: Cross multiply
    219,948.77x = 303,458.76 × 123,138.40
  4. Step 4: Simplify right side
    219,948.77x = 37,367,426,172.38
  5. Step 5: Solve for x
    x = 37,367,426,172.38/219,948.77
  6. Step 6: Final answer
    x = 169,891.50

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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.