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Finding the Fourth Proportional to 96,411.60, 144,617.40 and 81,685.80

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Solution

The fourth proportional to 96,411.60, 144,617.40 and 81,685.80 is: 122,528.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,411.60 : 144,617.40 = 81,685.80 : x
  2. Step 2: Convert to fraction form
    96,411.60/144,617.40 = 81,685.80/x
  3. Step 3: Cross multiply
    96,411.60x = 144,617.40 × 81,685.80
  4. Step 4: Simplify right side
    96,411.60x = 11,813,188,012.92
  5. Step 5: Solve for x
    x = 11,813,188,012.92/96,411.60
  6. Step 6: Final answer
    x = 122,528.70

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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.