Home / 152,121.60-209,943.09-84,143.70

Finding the Fourth Proportional to 152,121.60, 209,943.09 and 84,143.70

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Solution

The fourth proportional to 152,121.60, 209,943.09 and 84,143.70 is: 116,126.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,121.60 : 209,943.09 = 84,143.70 : x
  2. Step 2: Convert to fraction form
    152,121.60/209,943.09 = 84,143.70/x
  3. Step 3: Cross multiply
    152,121.60x = 209,943.09 × 84,143.70
  4. Step 4: Simplify right side
    152,121.60x = 17,665,388,382.03
  5. Step 5: Solve for x
    x = 17,665,388,382.03/152,121.60
  6. Step 6: Final answer
    x = 116,126.76

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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.