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Finding the Fourth Proportional to 99,260.24, 136,978.90 and 56,239.64

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Solution

The fourth proportional to 99,260.24, 136,978.90 and 56,239.64 is: 77,610.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,260.24 : 136,978.90 = 56,239.64 : x
  2. Step 2: Convert to fraction form
    99,260.24/136,978.90 = 56,239.64/x
  3. Step 3: Cross multiply
    99,260.24x = 136,978.90 × 56,239.64
  4. Step 4: Simplify right side
    99,260.24x = 7,703,644,708.38
  5. Step 5: Solve for x
    x = 7,703,644,708.38/99,260.24
  6. Step 6: Final answer
    x = 77,610.58

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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.