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Finding the Fourth Proportional to 109,098.51, 150,558 and 63,780.36

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Solution

The fourth proportional to 109,098.51, 150,558 and 63,780.36 is: 88,018.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,098.51 : 150,558 = 63,780.36 : x
  2. Step 2: Convert to fraction form
    109,098.51/150,558 = 63,780.36/x
  3. Step 3: Cross multiply
    109,098.51x = 150,558 × 63,780.36
  4. Step 4: Simplify right side
    109,098.51x = 9,602,643,440.88
  5. Step 5: Solve for x
    x = 9,602,643,440.88/109,098.51
  6. Step 6: Final answer
    x = 88,018.10

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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.