Home / 138,952.23-191,757.63-85,266.90

Finding the Fourth Proportional to 138,952.23, 191,757.63 and 85,266.90

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Solution

The fourth proportional to 138,952.23, 191,757.63 and 85,266.90 is: 117,670.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,952.23 : 191,757.63 = 85,266.90 : x
  2. Step 2: Convert to fraction form
    138,952.23/191,757.63 = 85,266.90/x
  3. Step 3: Cross multiply
    138,952.23x = 191,757.63 × 85,266.90
  4. Step 4: Simplify right side
    138,952.23x = 16,350,578,661.45
  5. Step 5: Solve for x
    x = 16,350,578,661.45/138,952.23
  6. Step 6: Final answer
    x = 117,670.50

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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.