Home / 143,869.10-215,865.84-77,231.41

Finding the Fourth Proportional to 143,869.10, 215,865.84 and 77,231.41

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Solution

The fourth proportional to 143,869.10, 215,865.84 and 77,231.41 is: 115,880.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,869.10 : 215,865.84 = 77,231.41 : x
  2. Step 2: Convert to fraction form
    143,869.10/215,865.84 = 77,231.41/x
  3. Step 3: Cross multiply
    143,869.10x = 215,865.84 × 77,231.41
  4. Step 4: Simplify right side
    143,869.10x = 16,671,623,194.03
  5. Step 5: Solve for x
    x = 16,671,623,194.03/143,869.10
  6. Step 6: Final answer
    x = 115,880.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.