Home / 120,617.20-166,447.79-72,862.23

Finding the Fourth Proportional to 120,617.20, 166,447.79 and 72,862.23

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Solution

The fourth proportional to 120,617.20, 166,447.79 and 72,862.23 is: 100,547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,617.20 : 166,447.79 = 72,862.23 : x
  2. Step 2: Convert to fraction form
    120,617.20/166,447.79 = 72,862.23/x
  3. Step 3: Cross multiply
    120,617.20x = 166,447.79 × 72,862.23
  4. Step 4: Simplify right side
    120,617.20x = 12,127,757,157.97
  5. Step 5: Solve for x
    x = 12,127,757,157.97/120,617.20
  6. Step 6: Final answer
    x = 100,547.50

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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.