Home / 123,333.40-170,145.78-72,320.23

Finding the Fourth Proportional to 123,333.40, 170,145.78 and 72,320.23

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Solution

The fourth proportional to 123,333.40, 170,145.78 and 72,320.23 is: 99,770.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,333.40 : 170,145.78 = 72,320.23 : x
  2. Step 2: Convert to fraction form
    123,333.40/170,145.78 = 72,320.23/x
  3. Step 3: Cross multiply
    123,333.40x = 170,145.78 × 72,320.23
  4. Step 4: Simplify right side
    123,333.40x = 12,304,981,943.13
  5. Step 5: Solve for x
    x = 12,304,981,943.13/123,333.40
  6. Step 6: Final answer
    x = 99,770.07

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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.