Home / 128,965.60-193,448.40-102,527.20

Finding the Fourth Proportional to 128,965.60, 193,448.40 and 102,527.20

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Solution

The fourth proportional to 128,965.60, 193,448.40 and 102,527.20 is: 153,790.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,965.60 : 193,448.40 = 102,527.20 : x
  2. Step 2: Convert to fraction form
    128,965.60/193,448.40 = 102,527.20/x
  3. Step 3: Cross multiply
    128,965.60x = 193,448.40 × 102,527.20
  4. Step 4: Simplify right side
    128,965.60x = 19,833,722,796.48
  5. Step 5: Solve for x
    x = 19,833,722,796.48/128,965.60
  6. Step 6: Final answer
    x = 153,790.80

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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.