Home / 99,843,908.80-149,780,378.40-42,336,068.80

Finding the Fourth Proportional to 99,843,908.80, 149,780,378.40 and 42,336,068.80

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Solution

The fourth proportional to 99,843,908.80, 149,780,378.40 and 42,336,068.80 is: 63,510,257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,843,908.80 : 149,780,378.40 = 42,336,068.80 : x
  2. Step 2: Convert to fraction form
    99,843,908.80/149,780,378.40 = 42,336,068.80/x
  3. Step 3: Cross multiply
    99,843,908.80x = 149,780,378.40 × 42,336,068.80
  4. Step 4: Simplify right side
    99,843,908.80x = 6,341,112,404,832,434
  5. Step 5: Solve for x
    x = 6,341,112,404,832,434/99,843,908.80
  6. Step 6: Final answer
    x = 63,510,257.97

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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.