Home / 120,437.28-166,132.08-72,662.40

Finding the Fourth Proportional to 120,437.28, 166,132.08 and 72,662.40

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Solution

The fourth proportional to 120,437.28, 166,132.08 and 72,662.40 is: 100,231.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,437.28 : 166,132.08 = 72,662.40 : x
  2. Step 2: Convert to fraction form
    120,437.28/166,132.08 = 72,662.40/x
  3. Step 3: Cross multiply
    120,437.28x = 166,132.08 × 72,662.40
  4. Step 4: Simplify right side
    120,437.28x = 12,071,555,649.79
  5. Step 5: Solve for x
    x = 12,071,555,649.79/120,437.28
  6. Step 6: Final answer
    x = 100,231.06

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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.