Home / 128,055.13-192,111.24-39,317.60

Finding the Fourth Proportional to 128,055.13, 192,111.24 and 39,317.60

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Solution

The fourth proportional to 128,055.13, 192,111.24 and 39,317.60 is: 58,985.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,055.13 : 192,111.24 = 39,317.60 : x
  2. Step 2: Convert to fraction form
    128,055.13/192,111.24 = 39,317.60/x
  3. Step 3: Cross multiply
    128,055.13x = 192,111.24 × 39,317.60
  4. Step 4: Simplify right side
    128,055.13x = 7,553,353,517.54
  5. Step 5: Solve for x
    x = 7,553,353,517.54/128,055.13
  6. Step 6: Final answer
    x = 58,985.17

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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.