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Finding the Fourth Proportional to 153,381.65, 230,110.64 and 121,910.45

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Solution

The fourth proportional to 153,381.65, 230,110.64 and 121,910.45 is: 182,896.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,381.65 : 230,110.64 = 121,910.45 : x
  2. Step 2: Convert to fraction form
    153,381.65/230,110.64 = 121,910.45/x
  3. Step 3: Cross multiply
    153,381.65x = 230,110.64 × 121,910.45
  4. Step 4: Simplify right side
    153,381.65x = 28,052,891,672.19
  5. Step 5: Solve for x
    x = 28,052,891,672.19/153,381.65
  6. Step 6: Final answer
    x = 182,896.01

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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.