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Finding the Fourth Proportional to 128,069.94, 192,133.47 and 39,332.40

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Solution

The fourth proportional to 128,069.94, 192,133.47 and 39,332.40 is: 59,007.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,069.94 : 192,133.47 = 39,332.40 : x
  2. Step 2: Convert to fraction form
    128,069.94/192,133.47 = 39,332.40/x
  3. Step 3: Cross multiply
    128,069.94x = 192,133.47 × 39,332.40
  4. Step 4: Simplify right side
    128,069.94x = 7,557,070,495.43
  5. Step 5: Solve for x
    x = 7,557,070,495.43/128,069.94
  6. Step 6: Final answer
    x = 59,007.37

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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.