Home / 128,368.59-192,436.25-58,209.63

Finding the Fourth Proportional to 128,368.59, 192,436.25 and 58,209.63

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Solution

The fourth proportional to 128,368.59, 192,436.25 and 58,209.63 is: 87,261.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,368.59 : 192,436.25 = 58,209.63 : x
  2. Step 2: Convert to fraction form
    128,368.59/192,436.25 = 58,209.63/x
  3. Step 3: Cross multiply
    128,368.59x = 192,436.25 × 58,209.63
  4. Step 4: Simplify right side
    128,368.59x = 11,201,642,620.04
  5. Step 5: Solve for x
    x = 11,201,642,620.04/128,368.59
  6. Step 6: Final answer
    x = 87,261.55

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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.