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Finding the Fourth Proportional to 103,279.80, 154,919.70 and 96,281.40

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Solution

The fourth proportional to 103,279.80, 154,919.70 and 96,281.40 is: 144,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,279.80 : 154,919.70 = 96,281.40 : x
  2. Step 2: Convert to fraction form
    103,279.80/154,919.70 = 96,281.40/x
  3. Step 3: Cross multiply
    103,279.80x = 154,919.70 × 96,281.40
  4. Step 4: Simplify right side
    103,279.80x = 14,915,885,603.58
  5. Step 5: Solve for x
    x = 14,915,885,603.58/103,279.80
  6. Step 6: Final answer
    x = 144,422.10

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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.