Home / 103,218.20-142,457.08-57,914.49

Finding the Fourth Proportional to 103,218.20, 142,457.08 and 57,914.49

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Solution

The fourth proportional to 103,218.20, 142,457.08 and 57,914.49 is: 79,930.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,218.20 : 142,457.08 = 57,914.49 : x
  2. Step 2: Convert to fraction form
    103,218.20/142,457.08 = 57,914.49/x
  3. Step 3: Cross multiply
    103,218.20x = 142,457.08 × 57,914.49
  4. Step 4: Simplify right side
    103,218.20x = 8,250,329,633.11
  5. Step 5: Solve for x
    x = 8,250,329,633.11/103,218.20
  6. Step 6: Final answer
    x = 79,930.96

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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.