Home / 99,471,628.80-149,163,206.40-45,635,443.20

Finding the Fourth Proportional to 99,471,628.80, 149,163,206.40 and 45,635,443.20

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Solution

The fourth proportional to 99,471,628.80, 149,163,206.40 and 45,635,443.20 is: 68,432,869.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,471,628.80 : 149,163,206.40 = 45,635,443.20 : x
  2. Step 2: Convert to fraction form
    99,471,628.80/149,163,206.40 = 45,635,443.20/x
  3. Step 3: Cross multiply
    99,471,628.80x = 149,163,206.40 × 45,635,443.20
  4. Step 4: Simplify right side
    99,471,628.80x = 6,807,129,033,197,077
  5. Step 5: Solve for x
    x = 6,807,129,033,197,077/99,471,628.80
  6. Step 6: Final answer
    x = 68,432,869.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.