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Finding the Fourth Proportional to 103,693.41, 155,381.65 and 69,834.22

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Solution

The fourth proportional to 103,693.41, 155,381.65 and 69,834.22 is: 104,644.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,693.41 : 155,381.65 = 69,834.22 : x
  2. Step 2: Convert to fraction form
    103,693.41/155,381.65 = 69,834.22/x
  3. Step 3: Cross multiply
    103,693.41x = 155,381.65 × 69,834.22
  4. Step 4: Simplify right side
    103,693.41x = 10,850,955,767.02
  5. Step 5: Solve for x
    x = 10,850,955,767.02/103,693.41
  6. Step 6: Final answer
    x = 104,644.60

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1.5x scale

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.