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Finding the Fourth Proportional to 111,179.04, 153,454.08 and 68,712

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Solution

The fourth proportional to 111,179.04, 153,454.08 and 68,712 is: 94,839.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,179.04 : 153,454.08 = 68,712 : x
  2. Step 2: Convert to fraction form
    111,179.04/153,454.08 = 68,712/x
  3. Step 3: Cross multiply
    111,179.04x = 153,454.08 × 68,712
  4. Step 4: Simplify right side
    111,179.04x = 10,544,136,744.96
  5. Step 5: Solve for x
    x = 10,544,136,744.96/111,179.04
  6. Step 6: Final answer
    x = 94,839.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.