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Finding the Fourth Proportional to 148,782.34, 205,349.43 and 88,386.54

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Solution

The fourth proportional to 148,782.34, 205,349.43 and 88,386.54 is: 121,991.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,782.34 : 205,349.43 = 88,386.54 : x
  2. Step 2: Convert to fraction form
    148,782.34/205,349.43 = 88,386.54/x
  3. Step 3: Cross multiply
    148,782.34x = 205,349.43 × 88,386.54
  4. Step 4: Simplify right side
    148,782.34x = 18,150,125,608.67
  5. Step 5: Solve for x
    x = 18,150,125,608.67/148,782.34
  6. Step 6: Final answer
    x = 121,991.13

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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.