Home / 128,252.39-192,399.26-39,505.81

Finding the Fourth Proportional to 128,252.39, 192,399.26 and 39,505.81

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Solution

The fourth proportional to 128,252.39, 192,399.26 and 39,505.81 is: 59,265.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,252.39 : 192,399.26 = 39,505.81 : x
  2. Step 2: Convert to fraction form
    128,252.39/192,399.26 = 39,505.81/x
  3. Step 3: Cross multiply
    128,252.39x = 192,399.26 × 39,505.81
  4. Step 4: Simplify right side
    128,252.39x = 7,600,887,931.17
  5. Step 5: Solve for x
    x = 7,600,887,931.17/128,252.39
  6. Step 6: Final answer
    x = 59,265.08

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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.