Home / 245,021.87-338,146.98-136,139.34

Finding the Fourth Proportional to 245,021.87, 338,146.98 and 136,139.34

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Solution

The fourth proportional to 245,021.87, 338,146.98 and 136,139.34 is: 187,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,021.87 : 338,146.98 = 136,139.34 : x
  2. Step 2: Convert to fraction form
    245,021.87/338,146.98 = 136,139.34/x
  3. Step 3: Cross multiply
    245,021.87x = 338,146.98 × 136,139.34
  4. Step 4: Simplify right side
    245,021.87x = 46,035,106,680.19
  5. Step 5: Solve for x
    x = 46,035,106,680.19/245,021.87
  6. Step 6: Final answer
    x = 187,881.62

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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.