Home / 140,137.61-193,394.01-76,479.50

Finding the Fourth Proportional to 140,137.61, 193,394.01 and 76,479.50

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Solution

The fourth proportional to 140,137.61, 193,394.01 and 76,479.50 is: 105,543.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,137.61 : 193,394.01 = 76,479.50 : x
  2. Step 2: Convert to fraction form
    140,137.61/193,394.01 = 76,479.50/x
  3. Step 3: Cross multiply
    140,137.61x = 193,394.01 × 76,479.50
  4. Step 4: Simplify right side
    140,137.61x = 14,790,677,187.80
  5. Step 5: Solve for x
    x = 14,790,677,187.80/140,137.61
  6. Step 6: Final answer
    x = 105,543.95

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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.