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Finding the Fourth Proportional to 99,400.80, 149,182.80 and 98,623.20

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Solution

The fourth proportional to 99,400.80, 149,182.80 and 98,623.20 is: 148,015.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,400.80 : 149,182.80 = 98,623.20 : x
  2. Step 2: Convert to fraction form
    99,400.80/149,182.80 = 98,623.20/x
  3. Step 3: Cross multiply
    99,400.80x = 149,182.80 × 98,623.20
  4. Step 4: Simplify right side
    99,400.80x = 14,712,885,120.96
  5. Step 5: Solve for x
    x = 14,712,885,120.96/99,400.80
  6. Step 6: Final answer
    x = 148,015.76

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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.