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Finding the Fourth Proportional to 98,880.20, 148,305.90 and 28,752.20

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Solution

The fourth proportional to 98,880.20, 148,305.90 and 28,752.20 is: 43,124.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,880.20 : 148,305.90 = 28,752.20 : x
  2. Step 2: Convert to fraction form
    98,880.20/148,305.90 = 28,752.20/x
  3. Step 3: Cross multiply
    98,880.20x = 148,305.90 × 28,752.20
  4. Step 4: Simplify right side
    98,880.20x = 4,264,120,897.98
  5. Step 5: Solve for x
    x = 4,264,120,897.98/98,880.20
  6. Step 6: Final answer
    x = 43,124.11

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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.