Home / 151,785.12-209,457.99-83,800.61

Finding the Fourth Proportional to 151,785.12, 209,457.99 and 83,800.61

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Solution

The fourth proportional to 151,785.12, 209,457.99 and 83,800.61 is: 115,641.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,785.12 : 209,457.99 = 83,800.61 : x
  2. Step 2: Convert to fraction form
    151,785.12/209,457.99 = 83,800.61/x
  3. Step 3: Cross multiply
    151,785.12x = 209,457.99 × 83,800.61
  4. Step 4: Simplify right side
    151,785.12x = 17,552,707,331.37
  5. Step 5: Solve for x
    x = 17,552,707,331.37/151,785.12
  6. Step 6: Final answer
    x = 115,641.82

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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.