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Finding the Fourth Proportional to 99,156.16, 136,784.80 and 63,308.48

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Solution

The fourth proportional to 99,156.16, 136,784.80 and 63,308.48 is: 87,333.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,156.16 : 136,784.80 = 63,308.48 : x
  2. Step 2: Convert to fraction form
    99,156.16/136,784.80 = 63,308.48/x
  3. Step 3: Cross multiply
    99,156.16x = 136,784.80 × 63,308.48
  4. Step 4: Simplify right side
    99,156.16x = 8,659,637,775.10
  5. Step 5: Solve for x
    x = 8,659,637,775.10/99,156.16
  6. Step 6: Final answer
    x = 87,333.33

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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.