Home / 102,135.08-140,944.40-56,811.52

Finding the Fourth Proportional to 102,135.08, 140,944.40 and 56,811.52

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Solution

The fourth proportional to 102,135.08, 140,944.40 and 56,811.52 is: 78,398.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,135.08 : 140,944.40 = 56,811.52 : x
  2. Step 2: Convert to fraction form
    102,135.08/140,944.40 = 56,811.52/x
  3. Step 3: Cross multiply
    102,135.08x = 140,944.40 × 56,811.52
  4. Step 4: Simplify right side
    102,135.08x = 8,007,265,599.49
  5. Step 5: Solve for x
    x = 8,007,265,599.49/102,135.08
  6. Step 6: Final answer
    x = 78,398.78

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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.