Home / 120,612.08-166,444.60-66,905.20

Finding the Fourth Proportional to 120,612.08, 166,444.60 and 66,905.20

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Solution

The fourth proportional to 120,612.08, 166,444.60 and 66,905.20 is: 92,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,612.08 : 166,444.60 = 66,905.20 : x
  2. Step 2: Convert to fraction form
    120,612.08/166,444.60 = 66,905.20/x
  3. Step 3: Cross multiply
    120,612.08x = 166,444.60 × 66,905.20
  4. Step 4: Simplify right side
    120,612.08x = 11,136,009,251.92
  5. Step 5: Solve for x
    x = 11,136,009,251.92/120,612.08
  6. Step 6: Final answer
    x = 92,329.14

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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.