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Finding the Fourth Proportional to 92,506.20, 138,905.10 and 53,140.20

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Solution

The fourth proportional to 92,506.20, 138,905.10 and 53,140.20 is: 79,794.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,506.20 : 138,905.10 = 53,140.20 : x
  2. Step 2: Convert to fraction form
    92,506.20/138,905.10 = 53,140.20/x
  3. Step 3: Cross multiply
    92,506.20x = 138,905.10 × 53,140.20
  4. Step 4: Simplify right side
    92,506.20x = 7,381,444,795.02
  5. Step 5: Solve for x
    x = 7,381,444,795.02/92,506.20
  6. Step 6: Final answer
    x = 79,794.05

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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.