Home / 148,590.18-205,009.65-91,170.54

Finding the Fourth Proportional to 148,590.18, 205,009.65 and 91,170.54

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Solution

The fourth proportional to 148,590.18, 205,009.65 and 91,170.54 is: 125,787.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,590.18 : 205,009.65 = 91,170.54 : x
  2. Step 2: Convert to fraction form
    148,590.18/205,009.65 = 91,170.54/x
  3. Step 3: Cross multiply
    148,590.18x = 205,009.65 × 91,170.54
  4. Step 4: Simplify right side
    148,590.18x = 18,690,840,495.71
  5. Step 5: Solve for x
    x = 18,690,840,495.71/148,590.18
  6. Step 6: Final answer
    x = 125,787.86

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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.