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Finding the Fourth Proportional to 92,428.20, 138,642.30 and 73,401.30

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Solution

The fourth proportional to 92,428.20, 138,642.30 and 73,401.30 is: 110,101.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,428.20 : 138,642.30 = 73,401.30 : x
  2. Step 2: Convert to fraction form
    92,428.20/138,642.30 = 73,401.30/x
  3. Step 3: Cross multiply
    92,428.20x = 138,642.30 × 73,401.30
  4. Step 4: Simplify right side
    92,428.20x = 10,176,525,054.99
  5. Step 5: Solve for x
    x = 10,176,525,054.99/92,428.20
  6. Step 6: Final answer
    x = 110,101.95

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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.