Home / 152,145.29-209,942.21-87,635.51

Finding the Fourth Proportional to 152,145.29, 209,942.21 and 87,635.51

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Solution

The fourth proportional to 152,145.29, 209,942.21 and 87,635.51 is: 120,926.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,145.29 : 209,942.21 = 87,635.51 : x
  2. Step 2: Convert to fraction form
    152,145.29/209,942.21 = 87,635.51/x
  3. Step 3: Cross multiply
    152,145.29x = 209,942.21 × 87,635.51
  4. Step 4: Simplify right side
    152,145.29x = 18,398,391,680.84
  5. Step 5: Solve for x
    x = 18,398,391,680.84/152,145.29
  6. Step 6: Final answer
    x = 120,926.46

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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.