Home / 89,619.84-134,412.48-72,190.80

Finding the Fourth Proportional to 89,619.84, 134,412.48 and 72,190.80

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Solution

The fourth proportional to 89,619.84, 134,412.48 and 72,190.80 is: 108,272.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,619.84 : 134,412.48 = 72,190.80 : x
  2. Step 2: Convert to fraction form
    89,619.84/134,412.48 = 72,190.80/x
  3. Step 3: Cross multiply
    89,619.84x = 134,412.48 × 72,190.80
  4. Step 4: Simplify right side
    89,619.84x = 9,703,344,461.18
  5. Step 5: Solve for x
    x = 9,703,344,461.18/89,619.84
  6. Step 6: Final answer
    x = 108,272.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.