Home / 148,780.89-205,353.36-85,155.60

Finding the Fourth Proportional to 148,780.89, 205,353.36 and 85,155.60

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Solution

The fourth proportional to 148,780.89, 205,353.36 and 85,155.60 is: 117,535.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,780.89 : 205,353.36 = 85,155.60 : x
  2. Step 2: Convert to fraction form
    148,780.89/205,353.36 = 85,155.60/x
  3. Step 3: Cross multiply
    148,780.89x = 205,353.36 × 85,155.60
  4. Step 4: Simplify right side
    148,780.89x = 17,486,988,582.82
  5. Step 5: Solve for x
    x = 17,486,988,582.82/148,780.89
  6. Step 6: Final answer
    x = 117,535.18

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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.