Home / 100,550.40-149,732.18-99,445.98

Finding the Fourth Proportional to 100,550.40, 149,732.18 and 99,445.98

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Solution

The fourth proportional to 100,550.40, 149,732.18 and 99,445.98 is: 148,087.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,550.40 : 149,732.18 = 99,445.98 : x
  2. Step 2: Convert to fraction form
    100,550.40/149,732.18 = 99,445.98/x
  3. Step 3: Cross multiply
    100,550.40x = 149,732.18 × 99,445.98
  4. Step 4: Simplify right side
    100,550.40x = 14,890,262,880.41
  5. Step 5: Solve for x
    x = 14,890,262,880.41/100,550.40
  6. Step 6: Final answer
    x = 148,087.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.