Home / 102,685.93-141,614.48-85,515.14

Finding the Fourth Proportional to 102,685.93, 141,614.48 and 85,515.14

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Solution

The fourth proportional to 102,685.93, 141,614.48 and 85,515.14 is: 117,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,685.93 : 141,614.48 = 85,515.14 : x
  2. Step 2: Convert to fraction form
    102,685.93/141,614.48 = 85,515.14/x
  3. Step 3: Cross multiply
    102,685.93x = 141,614.48 × 85,515.14
  4. Step 4: Simplify right side
    102,685.93x = 12,110,182,651.05
  5. Step 5: Solve for x
    x = 12,110,182,651.05/102,685.93
  6. Step 6: Final answer
    x = 117,934.20

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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.