Home / 148,839.75-205,401.29-85,212.63

Finding the Fourth Proportional to 148,839.75, 205,401.29 and 85,212.63

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Solution

The fourth proportional to 148,839.75, 205,401.29 and 85,212.63 is: 117,594.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,839.75 : 205,401.29 = 85,212.63 : x
  2. Step 2: Convert to fraction form
    148,839.75/205,401.29 = 85,212.63/x
  3. Step 3: Cross multiply
    148,839.75x = 205,401.29 × 85,212.63
  4. Step 4: Simplify right side
    148,839.75x = 17,502,783,700.23
  5. Step 5: Solve for x
    x = 17,502,783,700.23/148,839.75
  6. Step 6: Final answer
    x = 117,594.82

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1.5x scale

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.