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Finding the Fourth Proportional to 104,092, 155,750.70 and 91,381.84

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Solution

The fourth proportional to 104,092, 155,750.70 and 91,381.84 is: 136,732.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,092 : 155,750.70 = 91,381.84 : x
  2. Step 2: Convert to fraction form
    104,092/155,750.70 = 91,381.84/x
  3. Step 3: Cross multiply
    104,092x = 155,750.70 × 91,381.84
  4. Step 4: Simplify right side
    104,092x = 14,232,785,547.29
  5. Step 5: Solve for x
    x = 14,232,785,547.29/104,092
  6. Step 6: Final answer
    x = 136,732.75

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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.