Home / 139,944.12-193,124.90-76,281.92

Finding the Fourth Proportional to 139,944.12, 193,124.90 and 76,281.92

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Solution

The fourth proportional to 139,944.12, 193,124.90 and 76,281.92 is: 105,270.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,944.12 : 193,124.90 = 76,281.92 : x
  2. Step 2: Convert to fraction form
    139,944.12/193,124.90 = 76,281.92/x
  3. Step 3: Cross multiply
    139,944.12x = 193,124.90 × 76,281.92
  4. Step 4: Simplify right side
    139,944.12x = 14,731,936,824.77
  5. Step 5: Solve for x
    x = 14,731,936,824.77/139,944.12
  6. Step 6: Final answer
    x = 105,270.14

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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.