Home / 128,722.01-193,080.58-39,973.55

Finding the Fourth Proportional to 128,722.01, 193,080.58 and 39,973.55

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Solution

The fourth proportional to 128,722.01, 193,080.58 and 39,973.55 is: 59,959.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,722.01 : 193,080.58 = 39,973.55 : x
  2. Step 2: Convert to fraction form
    128,722.01/193,080.58 = 39,973.55/x
  3. Step 3: Cross multiply
    128,722.01x = 193,080.58 × 39,973.55
  4. Step 4: Simplify right side
    128,722.01x = 7,718,115,153.32
  5. Step 5: Solve for x
    x = 7,718,115,153.32/128,722.01
  6. Step 6: Final answer
    x = 59,959.56

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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.