Home / 120,647.28-166,497.69-72,891.39

Finding the Fourth Proportional to 120,647.28, 166,497.69 and 72,891.39

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Solution

The fourth proportional to 120,647.28, 166,497.69 and 72,891.39 is: 100,592.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,647.28 : 166,497.69 = 72,891.39 : x
  2. Step 2: Convert to fraction form
    120,647.28/166,497.69 = 72,891.39/x
  3. Step 3: Cross multiply
    120,647.28x = 166,497.69 × 72,891.39
  4. Step 4: Simplify right side
    120,647.28x = 12,136,248,055.89
  5. Step 5: Solve for x
    x = 12,136,248,055.89/120,647.28
  6. Step 6: Final answer
    x = 100,592.80

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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.