Home / 128,302.60-192,458.30-39,555.40

Finding the Fourth Proportional to 128,302.60, 192,458.30 and 39,555.40

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Solution

The fourth proportional to 128,302.60, 192,458.30 and 39,555.40 is: 59,334.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,302.60 : 192,458.30 = 39,555.40 : x
  2. Step 2: Convert to fraction form
    128,302.60/192,458.30 = 39,555.40/x
  3. Step 3: Cross multiply
    128,302.60x = 192,458.30 × 39,555.40
  4. Step 4: Simplify right side
    128,302.60x = 7,612,765,039.82
  5. Step 5: Solve for x
    x = 7,612,765,039.82/128,302.60
  6. Step 6: Final answer
    x = 59,334.46

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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.