Home / 154,396.19-213,119.30-90,752.87

Finding the Fourth Proportional to 154,396.19, 213,119.30 and 90,752.87

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Solution

The fourth proportional to 154,396.19, 213,119.30 and 90,752.87 is: 125,269.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,396.19 : 213,119.30 = 90,752.87 : x
  2. Step 2: Convert to fraction form
    154,396.19/213,119.30 = 90,752.87/x
  3. Step 3: Cross multiply
    154,396.19x = 213,119.30 × 90,752.87
  4. Step 4: Simplify right side
    154,396.19x = 19,341,187,673.63
  5. Step 5: Solve for x
    x = 19,341,187,673.63/154,396.19
  6. Step 6: Final answer
    x = 125,269.85

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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.