Home / 153,166.11-211,338-89,491.61

Finding the Fourth Proportional to 153,166.11, 211,338 and 89,491.61

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Solution

The fourth proportional to 153,166.11, 211,338 and 89,491.61 is: 123,480.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,166.11 : 211,338 = 89,491.61 : x
  2. Step 2: Convert to fraction form
    153,166.11/211,338 = 89,491.61/x
  3. Step 3: Cross multiply
    153,166.11x = 211,338 × 89,491.61
  4. Step 4: Simplify right side
    153,166.11x = 18,912,976,817.49
  5. Step 5: Solve for x
    x = 18,912,976,817.49/153,166.11
  6. Step 6: Final answer
    x = 123,480.17

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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.