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Finding the Fourth Proportional to 99,276.78, 148,926.06 and 43,078.26

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Solution

The fourth proportional to 99,276.78, 148,926.06 and 43,078.26 is: 64,622.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,276.78 : 148,926.06 = 43,078.26 : x
  2. Step 2: Convert to fraction form
    99,276.78/148,926.06 = 43,078.26/x
  3. Step 3: Cross multiply
    99,276.78x = 148,926.06 × 43,078.26
  4. Step 4: Simplify right side
    99,276.78x = 6,415,475,533.46
  5. Step 5: Solve for x
    x = 6,415,475,533.46/99,276.78
  6. Step 6: Final answer
    x = 64,622.12

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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.