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Finding the Fourth Proportional to 128,367.64, 192,533.64 and 39,624.04

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Solution

The fourth proportional to 128,367.64, 192,533.64 and 39,624.04 is: 59,430.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,367.64 : 192,533.64 = 39,624.04 : x
  2. Step 2: Convert to fraction form
    128,367.64/192,533.64 = 39,624.04/x
  3. Step 3: Cross multiply
    128,367.64x = 192,533.64 × 39,624.04
  4. Step 4: Simplify right side
    128,367.64x = 7,628,960,652.71
  5. Step 5: Solve for x
    x = 7,628,960,652.71/128,367.64
  6. Step 6: Final answer
    x = 59,430.56

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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.