Home / 151,813.70-209,521.37-88,151.51

Finding the Fourth Proportional to 151,813.70, 209,521.37 and 88,151.51

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Solution

The fourth proportional to 151,813.70, 209,521.37 and 88,151.51 is: 121,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,813.70 : 209,521.37 = 88,151.51 : x
  2. Step 2: Convert to fraction form
    151,813.70/209,521.37 = 88,151.51/x
  3. Step 3: Cross multiply
    151,813.70x = 209,521.37 × 88,151.51
  4. Step 4: Simplify right side
    151,813.70x = 18,469,625,142.77
  5. Step 5: Solve for x
    x = 18,469,625,142.77/151,813.70
  6. Step 6: Final answer
    x = 121,659.81

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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.