Home / 140,345.78-193,678.53-76,683.56

Finding the Fourth Proportional to 140,345.78, 193,678.53 and 76,683.56

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Solution

The fourth proportional to 140,345.78, 193,678.53 and 76,683.56 is: 105,824.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,345.78 : 193,678.53 = 76,683.56 : x
  2. Step 2: Convert to fraction form
    140,345.78/193,678.53 = 76,683.56/x
  3. Step 3: Cross multiply
    140,345.78x = 193,678.53 × 76,683.56
  4. Step 4: Simplify right side
    140,345.78x = 14,851,959,660.16
  5. Step 5: Solve for x
    x = 14,851,959,660.16/140,345.78
  6. Step 6: Final answer
    x = 105,824.06

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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.