Home / 139,000.28-191,820.65-75,338.06

Finding the Fourth Proportional to 139,000.28, 191,820.65 and 75,338.06

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Solution

The fourth proportional to 139,000.28, 191,820.65 and 75,338.06 is: 103,966.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,000.28 : 191,820.65 = 75,338.06 : x
  2. Step 2: Convert to fraction form
    139,000.28/191,820.65 = 75,338.06/x
  3. Step 3: Cross multiply
    139,000.28x = 191,820.65 × 75,338.06
  4. Step 4: Simplify right side
    139,000.28x = 14,451,394,303.15
  5. Step 5: Solve for x
    x = 14,451,394,303.15/139,000.28
  6. Step 6: Final answer
    x = 103,966.66

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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.