Home / 102,348.72-141,271.20-66,542.40

Finding the Fourth Proportional to 102,348.72, 141,271.20 and 66,542.40

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Solution

The fourth proportional to 102,348.72, 141,271.20 and 66,542.40 is: 91,847.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,348.72 : 141,271.20 = 66,542.40 : x
  2. Step 2: Convert to fraction form
    102,348.72/141,271.20 = 66,542.40/x
  3. Step 3: Cross multiply
    102,348.72x = 141,271.20 × 66,542.40
  4. Step 4: Simplify right side
    102,348.72x = 9,400,524,698.88
  5. Step 5: Solve for x
    x = 9,400,524,698.88/102,348.72
  6. Step 6: Final answer
    x = 91,847.99

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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.