Home / 148,942.80-205,540.56-85,280.40

Finding the Fourth Proportional to 148,942.80, 205,540.56 and 85,280.40

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Solution

The fourth proportional to 148,942.80, 205,540.56 and 85,280.40 is: 117,686.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,942.80 : 205,540.56 = 85,280.40 : x
  2. Step 2: Convert to fraction form
    148,942.80/205,540.56 = 85,280.40/x
  3. Step 3: Cross multiply
    148,942.80x = 205,540.56 × 85,280.40
  4. Step 4: Simplify right side
    148,942.80x = 17,528,581,173.02
  5. Step 5: Solve for x
    x = 17,528,581,173.02/148,942.80
  6. Step 6: Final answer
    x = 117,686.66

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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.