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Finding the Fourth Proportional to 99,797.40, 149,735.70 and 40,637.40

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Solution

The fourth proportional to 99,797.40, 149,735.70 and 40,637.40 is: 60,972.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,797.40 : 149,735.70 = 40,637.40 : x
  2. Step 2: Convert to fraction form
    99,797.40/149,735.70 = 40,637.40/x
  3. Step 3: Cross multiply
    99,797.40x = 149,735.70 × 40,637.40
  4. Step 4: Simplify right side
    99,797.40x = 6,084,869,535.18
  5. Step 5: Solve for x
    x = 6,084,869,535.18/99,797.40
  6. Step 6: Final answer
    x = 60,972.23

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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.