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Finding the Fourth Proportional to 155,475.84, 233,316.72 and 85,404

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Solution

The fourth proportional to 155,475.84, 233,316.72 and 85,404 is: 128,162.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,475.84 : 233,316.72 = 85,404 : x
  2. Step 2: Convert to fraction form
    155,475.84/233,316.72 = 85,404/x
  3. Step 3: Cross multiply
    155,475.84x = 233,316.72 × 85,404
  4. Step 4: Simplify right side
    155,475.84x = 19,926,181,154.88
  5. Step 5: Solve for x
    x = 19,926,181,154.88/155,475.84
  6. Step 6: Final answer
    x = 128,162.56

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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.