Home / 102,116.07-140,909.38-56,786.73

Finding the Fourth Proportional to 102,116.07, 140,909.38 and 56,786.73

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Solution

The fourth proportional to 102,116.07, 140,909.38 and 56,786.73 is: 78,359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,116.07 : 140,909.38 = 56,786.73 : x
  2. Step 2: Convert to fraction form
    102,116.07/140,909.38 = 56,786.73/x
  3. Step 3: Cross multiply
    102,116.07x = 140,909.38 × 56,786.73
  4. Step 4: Simplify right side
    102,116.07x = 8,001,782,916.53
  5. Step 5: Solve for x
    x = 8,001,782,916.53/102,116.07
  6. Step 6: Final answer
    x = 78,359.68

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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.