Home / 128,900.98-193,337.13-40,147.06

Finding the Fourth Proportional to 128,900.98, 193,337.13 and 40,147.06

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Solution

The fourth proportional to 128,900.98, 193,337.13 and 40,147.06 is: 60,216.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,900.98 : 193,337.13 = 40,147.06 : x
  2. Step 2: Convert to fraction form
    128,900.98/193,337.13 = 40,147.06/x
  3. Step 3: Cross multiply
    128,900.98x = 193,337.13 × 40,147.06
  4. Step 4: Simplify right side
    128,900.98x = 7,761,917,358.34
  5. Step 5: Solve for x
    x = 7,761,917,358.34/128,900.98
  6. Step 6: Final answer
    x = 60,216.12

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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.