Home / 128,071.65-192,136.02-39,334.14

Finding the Fourth Proportional to 128,071.65, 192,136.02 and 39,334.14

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Solution

The fourth proportional to 128,071.65, 192,136.02 and 39,334.14 is: 59,009.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,071.65 : 192,136.02 = 39,334.14 : x
  2. Step 2: Convert to fraction form
    128,071.65/192,136.02 = 39,334.14/x
  3. Step 3: Cross multiply
    128,071.65x = 192,136.02 × 39,334.14
  4. Step 4: Simplify right side
    128,071.65x = 7,557,505,109.72
  5. Step 5: Solve for x
    x = 7,557,505,109.72/128,071.65
  6. Step 6: Final answer
    x = 59,009.98

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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.