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Finding the Fourth Proportional to 98,148.24, 135,308.52 and 66,266.64

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Solution

The fourth proportional to 98,148.24, 135,308.52 and 66,266.64 is: 91,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,148.24 : 135,308.52 = 66,266.64 : x
  2. Step 2: Convert to fraction form
    98,148.24/135,308.52 = 66,266.64/x
  3. Step 3: Cross multiply
    98,148.24x = 135,308.52 × 66,266.64
  4. Step 4: Simplify right side
    98,148.24x = 8,966,440,983.77
  5. Step 5: Solve for x
    x = 8,966,440,983.77/98,148.24
  6. Step 6: Final answer
    x = 91,356.11

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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.