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Finding the Fourth Proportional to 128,352.87, 192,531.87 and 39,606.21

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Solution

The fourth proportional to 128,352.87, 192,531.87 and 39,606.21 is: 59,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,352.87 : 192,531.87 = 39,606.21 : x
  2. Step 2: Convert to fraction form
    128,352.87/192,531.87 = 39,606.21/x
  3. Step 3: Cross multiply
    128,352.87x = 192,531.87 × 39,606.21
  4. Step 4: Simplify right side
    128,352.87x = 7,625,457,674.91
  5. Step 5: Solve for x
    x = 7,625,457,674.91/128,352.87
  6. Step 6: Final answer
    x = 59,410.11

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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.