Home / 139,877.56-193,031.05-76,215.36

Finding the Fourth Proportional to 139,877.56, 193,031.05 and 76,215.36

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Solution

The fourth proportional to 139,877.56, 193,031.05 and 76,215.36 is: 105,177.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,877.56 : 193,031.05 = 76,215.36 : x
  2. Step 2: Convert to fraction form
    139,877.56/193,031.05 = 76,215.36/x
  3. Step 3: Cross multiply
    139,877.56x = 193,031.05 × 76,215.36
  4. Step 4: Simplify right side
    139,877.56x = 14,711,930,966.93
  5. Step 5: Solve for x
    x = 14,711,930,966.93/139,877.56
  6. Step 6: Final answer
    x = 105,177.21

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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.