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Finding the Fourth Proportional to 99,637.65, 149,714.60 and 74,910.78

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Solution

The fourth proportional to 99,637.65, 149,714.60 and 74,910.78 is: 112,560.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,637.65 : 149,714.60 = 74,910.78 : x
  2. Step 2: Convert to fraction form
    99,637.65/149,714.60 = 74,910.78/x
  3. Step 3: Cross multiply
    99,637.65x = 149,714.60 × 74,910.78
  4. Step 4: Simplify right side
    99,637.65x = 11,215,237,088.83
  5. Step 5: Solve for x
    x = 11,215,237,088.83/99,637.65
  6. Step 6: Final answer
    x = 112,560.23

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1.5x scale

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.