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Finding the Fourth Proportional to 110,904.68, 153,005.06 and 68,389.40

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Solution

The fourth proportional to 110,904.68, 153,005.06 and 68,389.40 is: 94,350.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,904.68 : 153,005.06 = 68,389.40 : x
  2. Step 2: Convert to fraction form
    110,904.68/153,005.06 = 68,389.40/x
  3. Step 3: Cross multiply
    110,904.68x = 153,005.06 × 68,389.40
  4. Step 4: Simplify right side
    110,904.68x = 10,463,924,250.36
  5. Step 5: Solve for x
    x = 10,463,924,250.36/110,904.68
  6. Step 6: Final answer
    x = 94,350.61

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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.