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Finding the Fourth Proportional to 100,918.18, 151,401.06 and 56,575.54

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Solution

The fourth proportional to 100,918.18, 151,401.06 and 56,575.54 is: 84,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,918.18 : 151,401.06 = 56,575.54 : x
  2. Step 2: Convert to fraction form
    100,918.18/151,401.06 = 56,575.54/x
  3. Step 3: Cross multiply
    100,918.18x = 151,401.06 × 56,575.54
  4. Step 4: Simplify right side
    100,918.18x = 8,565,596,726.07
  5. Step 5: Solve for x
    x = 8,565,596,726.07/100,918.18
  6. Step 6: Final answer
    x = 84,876.65

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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.