Home / 148,778.70-205,315.47-85,119.18

Finding the Fourth Proportional to 148,778.70, 205,315.47 and 85,119.18

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Solution

The fourth proportional to 148,778.70, 205,315.47 and 85,119.18 is: 117,464.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,778.70 : 205,315.47 = 85,119.18 : x
  2. Step 2: Convert to fraction form
    148,778.70/205,315.47 = 85,119.18/x
  3. Step 3: Cross multiply
    148,778.70x = 205,315.47 × 85,119.18
  4. Step 4: Simplify right side
    148,778.70x = 17,476,284,447.71
  5. Step 5: Solve for x
    x = 17,476,284,447.71/148,778.70
  6. Step 6: Final answer
    x = 117,464.96

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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.