Home / 102,999.50-142,127.57-57,671.18

Finding the Fourth Proportional to 102,999.50, 142,127.57 and 57,671.18

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Solution

The fourth proportional to 102,999.50, 142,127.57 and 57,671.18 is: 79,579.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,999.50 : 142,127.57 = 57,671.18 : x
  2. Step 2: Convert to fraction form
    102,999.50/142,127.57 = 57,671.18/x
  3. Step 3: Cross multiply
    102,999.50x = 142,127.57 × 57,671.18
  4. Step 4: Simplify right side
    102,999.50x = 8,196,664,739.40
  5. Step 5: Solve for x
    x = 8,196,664,739.40/102,999.50
  6. Step 6: Final answer
    x = 79,579.65

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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.