Home / 149,017.20-205,645.76-85,354.94

Finding the Fourth Proportional to 149,017.20, 205,645.76 and 85,354.94

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Solution

The fourth proportional to 149,017.20, 205,645.76 and 85,354.94 is: 117,790.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,017.20 : 205,645.76 = 85,354.94 : x
  2. Step 2: Convert to fraction form
    149,017.20/205,645.76 = 85,354.94/x
  3. Step 3: Cross multiply
    149,017.20x = 205,645.76 × 85,354.94
  4. Step 4: Simplify right side
    149,017.20x = 17,552,881,506.05
  5. Step 5: Solve for x
    x = 17,552,881,506.05/149,017.20
  6. Step 6: Final answer
    x = 117,790.98

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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.