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Finding the Fourth Proportional to 92,401.40, 138,342.90 and 89,809.40

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Solution

The fourth proportional to 92,401.40, 138,342.90 and 89,809.40 is: 134,462.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,401.40 : 138,342.90 = 89,809.40 : x
  2. Step 2: Convert to fraction form
    92,401.40/138,342.90 = 89,809.40/x
  3. Step 3: Cross multiply
    92,401.40x = 138,342.90 × 89,809.40
  4. Step 4: Simplify right side
    92,401.40x = 12,424,492,843.26
  5. Step 5: Solve for x
    x = 12,424,492,843.26/92,401.40
  6. Step 6: Final answer
    x = 134,462.17

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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.