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Finding the Fourth Proportional to 127,020.63, 175,263.65 and 75,328.15

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Solution

The fourth proportional to 127,020.63, 175,263.65 and 75,328.15 is: 103,938.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,020.63 : 175,263.65 = 75,328.15 : x
  2. Step 2: Convert to fraction form
    127,020.63/175,263.65 = 75,328.15/x
  3. Step 3: Cross multiply
    127,020.63x = 175,263.65 × 75,328.15
  4. Step 4: Simplify right side
    127,020.63x = 13,202,285,701.95
  5. Step 5: Solve for x
    x = 13,202,285,701.95/127,020.63
  6. Step 6: Final answer
    x = 103,938.12

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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.