Home / 102,131.20-140,939.01-56,808.21

Finding the Fourth Proportional to 102,131.20, 140,939.01 and 56,808.21

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Solution

The fourth proportional to 102,131.20, 140,939.01 and 56,808.21 is: 78,394.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,131.20 : 140,939.01 = 56,808.21 : x
  2. Step 2: Convert to fraction form
    102,131.20/140,939.01 = 56,808.21/x
  3. Step 3: Cross multiply
    102,131.20x = 140,939.01 × 56,808.21
  4. Step 4: Simplify right side
    102,131.20x = 8,006,492,877.27
  5. Step 5: Solve for x
    x = 8,006,492,877.27/102,131.20
  6. Step 6: Final answer
    x = 78,394.19

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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.