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Finding the Fourth Proportional to 99,681.80, 149,404.30 and 52,910.60

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Solution

The fourth proportional to 99,681.80, 149,404.30 and 52,910.60 is: 79,303.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,681.80 : 149,404.30 = 52,910.60 : x
  2. Step 2: Convert to fraction form
    99,681.80/149,404.30 = 52,910.60/x
  3. Step 3: Cross multiply
    99,681.80x = 149,404.30 × 52,910.60
  4. Step 4: Simplify right side
    99,681.80x = 7,905,071,155.58
  5. Step 5: Solve for x
    x = 7,905,071,155.58/99,681.80
  6. Step 6: Final answer
    x = 79,303.05

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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.