Home / 138,708,450.20-191,417,657.76-76,832,774.56

Finding the Fourth Proportional to 138,708,450.20, 191,417,657.76 and 76,832,774.56

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Solution

The fourth proportional to 138,708,450.20, 191,417,657.76 and 76,832,774.56 is: 106,029,226.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,708,450.20 : 191,417,657.76 = 76,832,774.56 : x
  2. Step 2: Convert to fraction form
    138,708,450.20/191,417,657.76 = 76,832,774.56/x
  3. Step 3: Cross multiply
    138,708,450.20x = 191,417,657.76 × 76,832,774.56
  4. Step 4: Simplify right side
    138,708,450.20x = 14,707,149,745,477,314
  5. Step 5: Solve for x
    x = 14,707,149,745,477,314/138,708,450.20
  6. Step 6: Final answer
    x = 106,029,226.95

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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.