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Finding the Fourth Proportional to 99,102.94, 136,875.68 and 65,262.76

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Solution

The fourth proportional to 99,102.94, 136,875.68 and 65,262.76 is: 90,137.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,102.94 : 136,875.68 = 65,262.76 : x
  2. Step 2: Convert to fraction form
    99,102.94/136,875.68 = 65,262.76/x
  3. Step 3: Cross multiply
    99,102.94x = 136,875.68 × 65,262.76
  4. Step 4: Simplify right side
    99,102.94x = 8,932,884,653.68
  5. Step 5: Solve for x
    x = 8,932,884,653.68/99,102.94
  6. Step 6: Final answer
    x = 90,137.43

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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.