Home / 128,146.08-192,237.48-39,407.01

Finding the Fourth Proportional to 128,146.08, 192,237.48 and 39,407.01

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Solution

The fourth proportional to 128,146.08, 192,237.48 and 39,407.01 is: 59,116.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,146.08 : 192,237.48 = 39,407.01 : x
  2. Step 2: Convert to fraction form
    128,146.08/192,237.48 = 39,407.01/x
  3. Step 3: Cross multiply
    128,146.08x = 192,237.48 × 39,407.01
  4. Step 4: Simplify right side
    128,146.08x = 7,575,504,296.73
  5. Step 5: Solve for x
    x = 7,575,504,296.73/128,146.08
  6. Step 6: Final answer
    x = 59,116.16

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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.