Home / 137,905.88-190,183.75-89,457.35

Finding the Fourth Proportional to 137,905.88, 190,183.75 and 89,457.35

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Solution

The fourth proportional to 137,905.88, 190,183.75 and 89,457.35 is: 123,369.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,905.88 : 190,183.75 = 89,457.35 : x
  2. Step 2: Convert to fraction form
    137,905.88/190,183.75 = 89,457.35/x
  3. Step 3: Cross multiply
    137,905.88x = 190,183.75 × 89,457.35
  4. Step 4: Simplify right side
    137,905.88x = 17,013,333,113.50
  5. Step 5: Solve for x
    x = 17,013,333,113.50/137,905.88
  6. Step 6: Final answer
    x = 123,369.17

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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.