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Finding the Fourth Proportional to 99,218.61, 136,923.06 and 53,897.39

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Solution

The fourth proportional to 99,218.61, 136,923.06 and 53,897.39 is: 74,379.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,218.61 : 136,923.06 = 53,897.39 : x
  2. Step 2: Convert to fraction form
    99,218.61/136,923.06 = 53,897.39/x
  3. Step 3: Cross multiply
    99,218.61x = 136,923.06 × 53,897.39
  4. Step 4: Simplify right side
    99,218.61x = 7,379,794,880.20
  5. Step 5: Solve for x
    x = 7,379,794,880.20/99,218.61
  6. Step 6: Final answer
    x = 74,379.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.