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Finding the Fourth Proportional to 101,859.36, 151,918.32 and 89,460.96

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Solution

The fourth proportional to 101,859.36, 151,918.32 and 89,460.96 is: 133,426.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,859.36 : 151,918.32 = 89,460.96 : x
  2. Step 2: Convert to fraction form
    101,859.36/151,918.32 = 89,460.96/x
  3. Step 3: Cross multiply
    101,859.36x = 151,918.32 × 89,460.96
  4. Step 4: Simplify right side
    101,859.36x = 13,590,758,748.79
  5. Step 5: Solve for x
    x = 13,590,758,748.79/101,859.36
  6. Step 6: Final answer
    x = 133,426.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.