Home / 140,133.48-193,388.28-76,475.38

Finding the Fourth Proportional to 140,133.48, 193,388.28 and 76,475.38

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Solution

The fourth proportional to 140,133.48, 193,388.28 and 76,475.38 is: 105,538.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,133.48 : 193,388.28 = 76,475.38 : x
  2. Step 2: Convert to fraction form
    140,133.48/193,388.28 = 76,475.38/x
  3. Step 3: Cross multiply
    140,133.48x = 193,388.28 × 76,475.38
  4. Step 4: Simplify right side
    140,133.48x = 14,789,442,200.55
  5. Step 5: Solve for x
    x = 14,789,442,200.55/140,133.48
  6. Step 6: Final answer
    x = 105,538.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.