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Finding the Fourth Proportional to 99,897.88, 149,698.50 and 40,661.08

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Solution

The fourth proportional to 99,897.88, 149,698.50 and 40,661.08 is: 60,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,897.88 : 149,698.50 = 40,661.08 : x
  2. Step 2: Convert to fraction form
    99,897.88/149,698.50 = 40,661.08/x
  3. Step 3: Cross multiply
    99,897.88x = 149,698.50 × 40,661.08
  4. Step 4: Simplify right side
    99,897.88x = 6,086,902,684.38
  5. Step 5: Solve for x
    x = 6,086,902,684.38/99,897.88
  6. Step 6: Final answer
    x = 60,931.25

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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.