Home / 128,005.08-192,008.76-39,259

Finding the Fourth Proportional to 128,005.08, 192,008.76 and 39,259

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Solution

The fourth proportional to 128,005.08, 192,008.76 and 39,259 is: 58,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,005.08 : 192,008.76 = 39,259 : x
  2. Step 2: Convert to fraction form
    128,005.08/192,008.76 = 39,259/x
  3. Step 3: Cross multiply
    128,005.08x = 192,008.76 × 39,259
  4. Step 4: Simplify right side
    128,005.08x = 7,538,071,908.84
  5. Step 5: Solve for x
    x = 7,538,071,908.84/128,005.08
  6. Step 6: Final answer
    x = 58,888.85

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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.