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Finding the Fourth Proportional to 149,172.61, 205,846.74 and 94,720.77

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Solution

The fourth proportional to 149,172.61, 205,846.74 and 94,720.77 is: 130,707.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,172.61 : 205,846.74 = 94,720.77 : x
  2. Step 2: Convert to fraction form
    149,172.61/205,846.74 = 94,720.77/x
  3. Step 3: Cross multiply
    149,172.61x = 205,846.74 × 94,720.77
  4. Step 4: Simplify right side
    149,172.61x = 19,497,961,714.79
  5. Step 5: Solve for x
    x = 19,497,961,714.79/149,172.61
  6. Step 6: Final answer
    x = 130,707.38

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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.