Home / 103,199.12-142,429.40-57,269.08

Finding the Fourth Proportional to 103,199.12, 142,429.40 and 57,269.08

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Solution

The fourth proportional to 103,199.12, 142,429.40 and 57,269.08 is: 79,039.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,199.12 : 142,429.40 = 57,269.08 : x
  2. Step 2: Convert to fraction form
    103,199.12/142,429.40 = 57,269.08/x
  3. Step 3: Cross multiply
    103,199.12x = 142,429.40 × 57,269.08
  4. Step 4: Simplify right side
    103,199.12x = 8,156,800,702.95
  5. Step 5: Solve for x
    x = 8,156,800,702.95/103,199.12
  6. Step 6: Final answer
    x = 79,039.44

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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.