Home / 120,613.49-166,422.62-72,869.48

Finding the Fourth Proportional to 120,613.49, 166,422.62 and 72,869.48

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Solution

The fourth proportional to 120,613.49, 166,422.62 and 72,869.48 is: 100,545.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,613.49 : 166,422.62 = 72,869.48 : x
  2. Step 2: Convert to fraction form
    120,613.49/166,422.62 = 72,869.48/x
  3. Step 3: Cross multiply
    120,613.49x = 166,422.62 × 72,869.48
  4. Step 4: Simplify right side
    120,613.49x = 12,127,129,415.29
  5. Step 5: Solve for x
    x = 12,127,129,415.29/120,613.49
  6. Step 6: Final answer
    x = 100,545.38

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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.