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Finding the Fourth Proportional to 92,984.20, 139,476.30 and 89,355.40

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Solution

The fourth proportional to 92,984.20, 139,476.30 and 89,355.40 is: 134,033.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,984.20 : 139,476.30 = 89,355.40 : x
  2. Step 2: Convert to fraction form
    92,984.20/139,476.30 = 89,355.40/x
  3. Step 3: Cross multiply
    92,984.20x = 139,476.30 × 89,355.40
  4. Step 4: Simplify right side
    92,984.20x = 12,462,960,577.02
  5. Step 5: Solve for x
    x = 12,462,960,577.02/92,984.20
  6. Step 6: Final answer
    x = 134,033.10

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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.