Home / 102,105.11-140,905.14-56,782.10

Finding the Fourth Proportional to 102,105.11, 140,905.14 and 56,782.10

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Solution

The fourth proportional to 102,105.11, 140,905.14 and 56,782.10 is: 78,359.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,105.11 : 140,905.14 = 56,782.10 : x
  2. Step 2: Convert to fraction form
    102,105.11/140,905.14 = 56,782.10/x
  3. Step 3: Cross multiply
    102,105.11x = 140,905.14 × 56,782.10
  4. Step 4: Simplify right side
    102,105.11x = 8,000,889,749.99
  5. Step 5: Solve for x
    x = 8,000,889,749.99/102,105.11
  6. Step 6: Final answer
    x = 78,359.35

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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.