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Finding the Fourth Proportional to 127,203.12, 190,808.73 and 63,988.71

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Solution

The fourth proportional to 127,203.12, 190,808.73 and 63,988.71 is: 95,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,203.12 : 190,808.73 = 63,988.71 : x
  2. Step 2: Convert to fraction form
    127,203.12/190,808.73 = 63,988.71/x
  3. Step 3: Cross multiply
    127,203.12x = 190,808.73 × 63,988.71
  4. Step 4: Simplify right side
    127,203.12x = 12,209,604,489.44
  5. Step 5: Solve for x
    x = 12,209,604,489.44/127,203.12
  6. Step 6: Final answer
    x = 95,985.10

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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.