Home / 102,018.20-140,780.58-56,699.36

Finding the Fourth Proportional to 102,018.20, 140,780.58 and 56,699.36

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Solution

The fourth proportional to 102,018.20, 140,780.58 and 56,699.36 is: 78,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,018.20 : 140,780.58 = 56,699.36 : x
  2. Step 2: Convert to fraction form
    102,018.20/140,780.58 = 56,699.36/x
  3. Step 3: Cross multiply
    102,018.20x = 140,780.58 × 56,699.36
  4. Step 4: Simplify right side
    102,018.20x = 7,982,168,786.43
  5. Step 5: Solve for x
    x = 7,982,168,786.43/102,018.20
  6. Step 6: Final answer
    x = 78,242.60

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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.