Home / 102,389.88-141,292.14-57,066.36

Finding the Fourth Proportional to 102,389.88, 141,292.14 and 57,066.36

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Solution

The fourth proportional to 102,389.88, 141,292.14 and 57,066.36 is: 78,748.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,389.88 : 141,292.14 = 57,066.36 : x
  2. Step 2: Convert to fraction form
    102,389.88/141,292.14 = 57,066.36/x
  3. Step 3: Cross multiply
    102,389.88x = 141,292.14 × 57,066.36
  4. Step 4: Simplify right side
    102,389.88x = 8,063,028,126.41
  5. Step 5: Solve for x
    x = 8,063,028,126.41/102,389.88
  6. Step 6: Final answer
    x = 78,748.29

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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.