Home / 144,338.11-216,703.51-81,202.66

Finding the Fourth Proportional to 144,338.11, 216,703.51 and 81,202.66

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Solution

The fourth proportional to 144,338.11, 216,703.51 and 81,202.66 is: 121,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,338.11 : 216,703.51 = 81,202.66 : x
  2. Step 2: Convert to fraction form
    144,338.11/216,703.51 = 81,202.66/x
  3. Step 3: Cross multiply
    144,338.11x = 216,703.51 × 81,202.66
  4. Step 4: Simplify right side
    144,338.11x = 17,596,901,917.53
  5. Step 5: Solve for x
    x = 17,596,901,917.53/144,338.11
  6. Step 6: Final answer
    x = 121,914.45

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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.