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Finding the Fourth Proportional to 149,752.72, 206,669.64 and 86,110.48

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Solution

The fourth proportional to 149,752.72, 206,669.64 and 86,110.48 is: 118,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,752.72 : 206,669.64 = 86,110.48 : x
  2. Step 2: Convert to fraction form
    149,752.72/206,669.64 = 86,110.48/x
  3. Step 3: Cross multiply
    149,752.72x = 206,669.64 × 86,110.48
  4. Step 4: Simplify right side
    149,752.72x = 17,796,421,901.83
  5. Step 5: Solve for x
    x = 17,796,421,901.83/149,752.72
  6. Step 6: Final answer
    x = 118,838.72

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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.