Home / 128,284.48-192,448.32-39,535.36

Finding the Fourth Proportional to 128,284.48, 192,448.32 and 39,535.36

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Solution

The fourth proportional to 128,284.48, 192,448.32 and 39,535.36 is: 59,309.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,284.48 : 192,448.32 = 39,535.36 : x
  2. Step 2: Convert to fraction form
    128,284.48/192,448.32 = 39,535.36/x
  3. Step 3: Cross multiply
    128,284.48x = 192,448.32 × 39,535.36
  4. Step 4: Simplify right side
    128,284.48x = 7,608,513,612.60
  5. Step 5: Solve for x
    x = 7,608,513,612.60/128,284.48
  6. Step 6: Final answer
    x = 59,309.70

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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.