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Finding the Fourth Proportional to 92,222.80, 138,334.20 and 87,411.40

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Solution

The fourth proportional to 92,222.80, 138,334.20 and 87,411.40 is: 131,117.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,222.80 : 138,334.20 = 87,411.40 : x
  2. Step 2: Convert to fraction form
    92,222.80/138,334.20 = 87,411.40/x
  3. Step 3: Cross multiply
    92,222.80x = 138,334.20 × 87,411.40
  4. Step 4: Simplify right side
    92,222.80x = 12,091,986,089.88
  5. Step 5: Solve for x
    x = 12,091,986,089.88/92,222.80
  6. Step 6: Final answer
    x = 131,117.10

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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.