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Finding the Fourth Proportional to 423,661.95, 635,492.57 and 108,118.89

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Solution

The fourth proportional to 423,661.95, 635,492.57 and 108,118.89 is: 162,178.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,661.95 : 635,492.57 = 108,118.89 : x
  2. Step 2: Convert to fraction form
    423,661.95/635,492.57 = 108,118.89/x
  3. Step 3: Cross multiply
    423,661.95x = 635,492.57 × 108,118.89
  4. Step 4: Simplify right side
    423,661.95x = 68,708,750,731.05
  5. Step 5: Solve for x
    x = 68,708,750,731.05/423,661.95
  6. Step 6: Final answer
    x = 162,178.24

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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.