Home / 102,133.28-140,943.57-57,421.28

Finding the Fourth Proportional to 102,133.28, 140,943.57 and 57,421.28

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Solution

The fourth proportional to 102,133.28, 140,943.57 and 57,421.28 is: 79,241.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,133.28 : 140,943.57 = 57,421.28 : x
  2. Step 2: Convert to fraction form
    102,133.28/140,943.57 = 57,421.28/x
  3. Step 3: Cross multiply
    102,133.28x = 140,943.57 × 57,421.28
  4. Step 4: Simplify right side
    102,133.28x = 8,093,160,197.17
  5. Step 5: Solve for x
    x = 8,093,160,197.17/102,133.28
  6. Step 6: Final answer
    x = 79,241.17

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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.