Home / 103,255.74-154,939.95-40,078.35

Finding the Fourth Proportional to 103,255.74, 154,939.95 and 40,078.35

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Solution

The fourth proportional to 103,255.74, 154,939.95 and 40,078.35 is: 60,139.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,255.74 : 154,939.95 = 40,078.35 : x
  2. Step 2: Convert to fraction form
    103,255.74/154,939.95 = 40,078.35/x
  3. Step 3: Cross multiply
    103,255.74x = 154,939.95 × 40,078.35
  4. Step 4: Simplify right side
    103,255.74x = 6,209,737,545.08
  5. Step 5: Solve for x
    x = 6,209,737,545.08/103,255.74
  6. Step 6: Final answer
    x = 60,139.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.