Home / 103,125.13-142,318.28-57,817.64

Finding the Fourth Proportional to 103,125.13, 142,318.28 and 57,817.64

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Solution

The fourth proportional to 103,125.13, 142,318.28 and 57,817.64 is: 79,791.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,125.13 : 142,318.28 = 57,817.64 : x
  2. Step 2: Convert to fraction form
    103,125.13/142,318.28 = 57,817.64/x
  3. Step 3: Cross multiply
    103,125.13x = 142,318.28 × 57,817.64
  4. Step 4: Simplify right side
    103,125.13x = 8,228,507,078.46
  5. Step 5: Solve for x
    x = 8,228,507,078.46/103,125.13
  6. Step 6: Final answer
    x = 79,791.48

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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.