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Finding the Fourth Proportional to 120,875.68, 166,810.32 and 67,165.72

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Solution

The fourth proportional to 120,875.68, 166,810.32 and 67,165.72 is: 92,689.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,875.68 : 166,810.32 = 67,165.72 : x
  2. Step 2: Convert to fraction form
    120,875.68/166,810.32 = 67,165.72/x
  3. Step 3: Cross multiply
    120,875.68x = 166,810.32 × 67,165.72
  4. Step 4: Simplify right side
    120,875.68x = 11,203,935,246.23
  5. Step 5: Solve for x
    x = 11,203,935,246.23/120,875.68
  6. Step 6: Final answer
    x = 92,689.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.