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Finding the Fourth Proportional to 144,601.80, 216,902.70 and 91,457.70

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Solution

The fourth proportional to 144,601.80, 216,902.70 and 91,457.70 is: 137,186.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,601.80 : 216,902.70 = 91,457.70 : x
  2. Step 2: Convert to fraction form
    144,601.80/216,902.70 = 91,457.70/x
  3. Step 3: Cross multiply
    144,601.80x = 216,902.70 × 91,457.70
  4. Step 4: Simplify right side
    144,601.80x = 19,837,422,065.79
  5. Step 5: Solve for x
    x = 19,837,422,065.79/144,601.80
  6. Step 6: Final answer
    x = 137,186.55

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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.