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Finding the Fourth Proportional to 108,540.66, 162,916.08 and 52,420.21

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Solution

The fourth proportional to 108,540.66, 162,916.08 and 52,420.21 is: 78,681.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,540.66 : 162,916.08 = 52,420.21 : x
  2. Step 2: Convert to fraction form
    108,540.66/162,916.08 = 52,420.21/x
  3. Step 3: Cross multiply
    108,540.66x = 162,916.08 × 52,420.21
  4. Step 4: Simplify right side
    108,540.66x = 8,540,095,125.98
  5. Step 5: Solve for x
    x = 8,540,095,125.98/108,540.66
  6. Step 6: Final answer
    x = 78,681.07

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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.